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Boston Capital Tax Credit Fund IV LP – ‘10-Q’ for 12/31/19 – ‘EX-101.LAB’

On:  Thursday, 2/13/20, at 9:04am ET   ·   For:  12/31/19   ·   Accession #:  913778-20-3   ·   File #:  0-26200

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  As Of               Filer                 Filing    For·On·As Docs:Size

 2/13/20  Boston Cap Tax Credit Fund IV LP  10-Q       12/31/19   40:13M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Bctc Iv Dec 2019 10-Q                               HTML   2.73M 
 2: EX-31       Bctc Iv Certification 302                           HTML     17K 
 3: EX-31       Bctc Iv Certification 302                           HTML     17K 
 4: EX-32       Bctc Iv Certification 906                           HTML     15K 
 5: EX-32       Bctc Iv Certification 906                           HTML     15K 
39: R1          Document And Entity Information                     HTML     42K 
23: R2          Condensed Balance Sheets                            HTML    234K 
18: R3          Condensed Balance Sheets (Parenthetical)            HTML    102K 
27: R4          Condensed Statements of Operations                  HTML    243K 
37: R5          Condensed Statements of Changes in Partners'        HTML    124K 
                Capital (Deficit)                                                
21: R6          Condensed Statements of Cash Flows                  HTML    321K 
16: R7          Organization                                        HTML    100K 
30: R8          Accounting and Financial Reporting Policies         HTML     17K 
36: R9          Related Party Transactions                          HTML    141K 
17: R10         Investments in Operating Partnerships               HTML   1.36M 
22: R11         Taxable Loss                                        HTML     15K 
40: R12         Income Taxes                                        HTML     16K 
29: R13         Subsequent Events                                   HTML     16K 
15: R14         Organization (Tables)                               HTML     95K 
20: R15         Related Party Transactions (Tables)                 HTML    142K 
38: R16         Investments in Operating Partnerships (Tables)      HTML   1.36M 
28: R17         ORGANIZATION - BACs sold and total equity           HTML     97K 
                (Details)                                                        
14: R18         ORGANIZATION - Additional Information (Details)     HTML     21K 
24: R19         RELATED PARTY TRANSACTIONS - Fund management fees   HTML     64K 
                accrued (Details)                                                
35: R20         RELATED PARTY TRANSACTIONS - Fund management fees   HTML     64K 
                paid (Details)                                                   
32: R21         RELATED PARTY TRANSACTIONS - Additional             HTML     15K 
                Information (Details)                                            
13: R22         INVESTMENTS IN OPERATING PARTNERSHIPS - Operating   HTML     55K 
                Partnerships within the Fund (Details)                           
25: R23         INVESTMENTS IN OPERATING PARTNERSHIPS -             HTML     29K 
                Contributions payable (Details)                                  
34: R24         INVESTMENTS IN OPERATING PARTNERSHIPS -             HTML    104K 
                Dispositions by series (Details)                                 
31: R25         INVESTMENTS IN OPERATING PARTNERSHIPS - Current     HTML    139K 
                financial results available for the Operating                    
                Partnerships (Details)                                           
12: R26         INVESTMENTS IN OPERATING PARTNERSHIPS - Additional  HTML     31K 
                Information (Details)                                            
33: XML         IDEA XML File -- Filing Summary                      XML     62K 
26: EXCEL       IDEA Workbook of Financial Reports                  XLSX     84K 
 6: EX-101.INS  XBRL Instance -- bctciv-20191231                     XML   7.86M 
 8: EX-101.CAL  XBRL Calculations -- bctciv-20191231_cal             XML     57K 
 9: EX-101.DEF  XBRL Definitions -- bctciv-20191231_def              XML    447K 
10: EX-101.LAB  XBRL Labels -- bctciv-20191231_lab                   XML    373K 
11: EX-101.PRE  XBRL Presentations -- bctciv-20191231_pre            XML    575K 
 7: EX-101.SCH  XBRL Schema -- bctciv-20191231                       XSD     96K 
19: ZIP         XBRL Zipped Folder -- 0000913778-20-000003-xbrl      Zip    181K

‘EX-101.LAB’   —   XBRL Labels — bctciv-20191231_lab

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
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<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag"/>
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<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate"/>
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<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalYearFocus_lbl" xml:lang="en-US"> Document Fiscal Year Focus </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus"/>
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<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xml:lang="en-US"> Document Fiscal Period Focus </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityRegistrantName_lbl" xml:lang="en-US"> Entity Registrant Name </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCentralIndexKey_lbl" xml:lang="en-US"> Entity Central Index Key </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xml:lang="en-US"> Current Fiscal Year End Date </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="dei_EntityCurrentReportingStatus"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCurrentReportingStatus_lbl" xml:lang="en-US"> Entity Current Reporting Status </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInteractiveDataCurrent" xlink:label="dei_EntityInteractiveDataCurrent"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xml:lang="en-US"> Entity Interactive Data Current </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityFilerCategory_lbl" xml:lang="en-US"> Entity Filer Category </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xml:lang="en-US"> Entity Common Stock, Shares Outstanding </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityShellCompany" xlink:label="dei_EntityShellCompany"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityShellCompany" xlink:to="dei_EntityShellCompany_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityShellCompany_lbl" xml:lang="en-US"> Entity Shell Company </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xml:lang="en-US"> Entity Emerging Growth Company </label>
<loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="dei_EntitySmallBusiness_lbl" xml:lang="en-US"> Entity Small Business </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xml:lang="en-US"> CONDENSED BALANCE SHEETS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementTable_lbl" xml:lang="en-US"> Statement [Table] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_TaxCreditSeriesAxis" xlink:label="bctciv_TaxCreditSeriesAxis"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_TaxCreditSeriesAxis" xlink:to="bctciv_TaxCreditSeriesAxis_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_TaxCreditSeriesAxis_lbl" xml:lang="en-US"> Tax Credit Series [Axis] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_TaxCreditSeriesDomain" xlink:label="bctciv_TaxCreditSeriesDomain"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_TaxCreditSeriesDomain" xlink:to="bctciv_TaxCreditSeriesDomain_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_TaxCreditSeriesDomain_lbl" xml:lang="en-US"> Tax Credit Series [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_TaxCreditSeriesDomain_lbl" xml:lang="en-US"> Tax Credit Series [Domain] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyMember" xlink:label="bctciv_SeriesTwentyMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyMember" xlink:to="bctciv_SeriesTwentyMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyMember_lbl" xml:lang="en-US"> Series Twenty Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyMember_lbl" xml:lang="en-US"> Series Twenty [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyMember_lbl" xml:lang="en-US"> Series Twenty [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyOneMember" xlink:label="bctciv_SeriesTwentyOneMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyOneMember" xlink:to="bctciv_SeriesTwentyOneMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyOneMember_lbl" xml:lang="en-US"> Series Twenty One Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyOneMember_lbl" xml:lang="en-US"> Series Twenty One [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyOneMember_lbl" xml:lang="en-US"> Series Twenty One [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyTwoMember" xlink:label="bctciv_SeriesTwentyTwoMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyTwoMember" xlink:to="bctciv_SeriesTwentyTwoMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyTwoMember_lbl" xml:lang="en-US"> Series Twenty Two Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyTwoMember_lbl" xml:lang="en-US"> Series Twenty Two [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyTwoMember_lbl" xml:lang="en-US"> Series Twenty Two [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyThreeMember" xlink:label="bctciv_SeriesTwentyThreeMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyThreeMember" xlink:to="bctciv_SeriesTwentyThreeMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyThreeMember_lbl" xml:lang="en-US"> Series Twenty Three Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyThreeMember_lbl" xml:lang="en-US"> Series Twenty Three [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyThreeMember_lbl" xml:lang="en-US"> Series Twenty Three [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyFourMember" xlink:label="bctciv_SeriesTwentyFourMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyFourMember" xlink:to="bctciv_SeriesTwentyFourMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyFourMember_lbl" xml:lang="en-US"> Series Twenty Four Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyFourMember_lbl" xml:lang="en-US"> Series Twenty Four [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyFourMember_lbl" xml:lang="en-US"> Series Twenty Four [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyFiveMember" xlink:label="bctciv_SeriesTwentyFiveMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyFiveMember" xlink:to="bctciv_SeriesTwentyFiveMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyFiveMember_lbl" xml:lang="en-US"> Series Twenty Five Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyFiveMember_lbl" xml:lang="en-US"> Series Twenty Five [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyFiveMember_lbl" xml:lang="en-US"> Series Twenty Five [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentySixMember" xlink:label="bctciv_SeriesTwentySixMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentySixMember" xlink:to="bctciv_SeriesTwentySixMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentySixMember_lbl" xml:lang="en-US"> Series Twenty Six Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentySixMember_lbl" xml:lang="en-US"> Series Twenty Six [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentySixMember_lbl" xml:lang="en-US"> Series Twenty Six [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentySevenMember" xlink:label="bctciv_SeriesTwentySevenMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentySevenMember" xlink:to="bctciv_SeriesTwentySevenMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentySevenMember_lbl" xml:lang="en-US"> Series Twenty Seven Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentySevenMember_lbl" xml:lang="en-US"> Series Twenty Seven [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentySevenMember_lbl" xml:lang="en-US"> Series Twenty Seven [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyEightMember" xlink:label="bctciv_SeriesTwentyEightMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyEightMember" xlink:to="bctciv_SeriesTwentyEightMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyEightMember_lbl" xml:lang="en-US"> Series Twenty Eight Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyEightMember_lbl" xml:lang="en-US"> Series Twenty Eight [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyEightMember_lbl" xml:lang="en-US"> Series Twenty Eight [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesTwentyNineMember" xlink:label="bctciv_SeriesTwentyNineMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesTwentyNineMember" xlink:to="bctciv_SeriesTwentyNineMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesTwentyNineMember_lbl" xml:lang="en-US"> Series Twenty Nine Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesTwentyNineMember_lbl" xml:lang="en-US"> Series Twenty Nine [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesTwentyNineMember_lbl" xml:lang="en-US"> Series Twenty Nine [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyMember" xlink:label="bctciv_SeriesThirtyMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyMember" xlink:to="bctciv_SeriesThirtyMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyMember_lbl" xml:lang="en-US"> Series Thirty Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyMember_lbl" xml:lang="en-US"> Series Thirty [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyMember_lbl" xml:lang="en-US"> Series Thirty [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyOneMember" xlink:label="bctciv_SeriesThirtyOneMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyOneMember" xlink:to="bctciv_SeriesThirtyOneMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyOneMember_lbl" xml:lang="en-US"> Series Thirty One Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyOneMember_lbl" xml:lang="en-US"> Series Thirty One [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyOneMember_lbl" xml:lang="en-US"> Series Thirty One [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyTwoMember" xlink:label="bctciv_SeriesThirtyTwoMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyTwoMember" xlink:to="bctciv_SeriesThirtyTwoMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyTwoMember_lbl" xml:lang="en-US"> Series Thirty Two Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyTwoMember_lbl" xml:lang="en-US"> Series Thirty Two [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyTwoMember_lbl" xml:lang="en-US"> Series Thirty Two [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyThreeMember" xlink:label="bctciv_SeriesThirtyThreeMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyThreeMember" xlink:to="bctciv_SeriesThirtyThreeMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyThreeMember_lbl" xml:lang="en-US"> Series Thirty Three Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyThreeMember_lbl" xml:lang="en-US"> Series Thirty Three [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyThreeMember_lbl" xml:lang="en-US"> Series Thirty Three [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyFourMember" xlink:label="bctciv_SeriesThirtyFourMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyFourMember" xlink:to="bctciv_SeriesThirtyFourMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyFourMember_lbl" xml:lang="en-US"> Series Thirty Four Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyFourMember_lbl" xml:lang="en-US"> Series Thirty Four [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyFourMember_lbl" xml:lang="en-US"> Series Thirty Four [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyFiveMember" xlink:label="bctciv_SeriesThirtyFiveMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyFiveMember" xlink:to="bctciv_SeriesThirtyFiveMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyFiveMember_lbl" xml:lang="en-US"> Series Thirty Five Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyFiveMember_lbl" xml:lang="en-US"> Series Thirty Five [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyFiveMember_lbl" xml:lang="en-US"> Series Thirty Five [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtySixMember" xlink:label="bctciv_SeriesThirtySixMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtySixMember" xlink:to="bctciv_SeriesThirtySixMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtySixMember_lbl" xml:lang="en-US"> Series Thirty Six Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtySixMember_lbl" xml:lang="en-US"> Series Thirty Six [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtySixMember_lbl" xml:lang="en-US"> Series Thirty Six [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtySevenMember" xlink:label="bctciv_SeriesThirtySevenMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtySevenMember" xlink:to="bctciv_SeriesThirtySevenMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtySevenMember_lbl" xml:lang="en-US"> Series Thirty Seven Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtySevenMember_lbl" xml:lang="en-US"> Series Thirty Seven [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtySevenMember_lbl" xml:lang="en-US"> Series Thirty Seven [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyEightMember" xlink:label="bctciv_SeriesThirtyEightMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyEightMember" xlink:to="bctciv_SeriesThirtyEightMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyEightMember_lbl" xml:lang="en-US"> Series Thirty Eight Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyEightMember_lbl" xml:lang="en-US"> Series Thirty Eight [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyEightMember_lbl" xml:lang="en-US"> Series Thirty Eight [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesThirtyNineMember" xlink:label="bctciv_SeriesThirtyNineMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesThirtyNineMember" xlink:to="bctciv_SeriesThirtyNineMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesThirtyNineMember_lbl" xml:lang="en-US"> Series Thirty Nine Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesThirtyNineMember_lbl" xml:lang="en-US"> Series Thirty Nine [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesThirtyNineMember_lbl" xml:lang="en-US"> Series Thirty Nine [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortyMember" xlink:label="bctciv_SeriesFortyMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortyMember" xlink:to="bctciv_SeriesFortyMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortyMember_lbl" xml:lang="en-US"> Series Forty Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortyMember_lbl" xml:lang="en-US"> Series Forty [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortyMember_lbl" xml:lang="en-US"> Series Forty [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortyOneMember" xlink:label="bctciv_SeriesFortyOneMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortyOneMember" xlink:to="bctciv_SeriesFortyOneMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortyOneMember_lbl" xml:lang="en-US"> Series Forty One Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortyOneMember_lbl" xml:lang="en-US"> Series Forty One [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortyOneMember_lbl" xml:lang="en-US"> Series Forty One [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortyTwoMember" xlink:label="bctciv_SeriesFortyTwoMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortyTwoMember" xlink:to="bctciv_SeriesFortyTwoMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortyTwoMember_lbl" xml:lang="en-US"> Series Forty Two Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortyTwoMember_lbl" xml:lang="en-US"> Series Forty Two [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortyTwoMember_lbl" xml:lang="en-US"> Series Forty Two [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortyThreeMember" xlink:label="bctciv_SeriesFortyThreeMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortyThreeMember" xlink:to="bctciv_SeriesFortyThreeMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortyThreeMember_lbl" xml:lang="en-US"> Series Forty Three Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortyThreeMember_lbl" xml:lang="en-US"> Series Forty Three [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortyThreeMember_lbl" xml:lang="en-US"> Series Forty Three [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortyFourMember" xlink:label="bctciv_SeriesFortyFourMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortyFourMember" xlink:to="bctciv_SeriesFortyFourMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortyFourMember_lbl" xml:lang="en-US"> Series Forty Four Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortyFourMember_lbl" xml:lang="en-US"> Series Forty Four [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortyFourMember_lbl" xml:lang="en-US"> Series Forty Four [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortyFiveMember" xlink:label="bctciv_SeriesFortyFiveMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortyFiveMember" xlink:to="bctciv_SeriesFortyFiveMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortyFiveMember_lbl" xml:lang="en-US"> Series Forty Five Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortyFiveMember_lbl" xml:lang="en-US"> Series Forty Five [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortyFiveMember_lbl" xml:lang="en-US"> Series Forty Five [Member] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SeriesFortySixMember" xlink:label="bctciv_SeriesFortySixMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SeriesFortySixMember" xlink:to="bctciv_SeriesFortySixMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SeriesFortySixMember_lbl" xml:lang="en-US"> Series Forty Six Member. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SeriesFortySixMember_lbl" xml:lang="en-US"> Series Forty Six [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SeriesFortySixMember_lbl" xml:lang="en-US"> Series Forty Six [Member] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="us-gaap_StatementLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_StatementLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementLineItems_lbl" xml:lang="en-US"> Statement [Line Items] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="us-gaap_AssetsAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US"> Assets [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AssetsAbstract_lbl" xml:lang="en-US"> ASSETS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="us-gaap_RealEstateInvestmentPropertyNet"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RealEstateInvestmentPropertyNet" xlink:to="us-gaap_RealEstateInvestmentPropertyNet_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xml:lang="en-US"> Real Estate Investment Property, Net </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xml:lang="en-US"> INVESTMENTS IN OPERATING PARTNERSHIPS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsUnclassifiedAbstract" xlink:label="us-gaap_OtherAssetsUnclassifiedAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsUnclassifiedAbstract" xlink:to="us-gaap_OtherAssetsUnclassifiedAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssetsUnclassifiedAbstract_lbl" xml:lang="en-US"> Other Assets, Unclassified [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherAssetsUnclassifiedAbstract_lbl" xml:lang="en-US"> OTHER ASSETS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xml:lang="en-US"> Cash and cash equivalents </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssets" xlink:label="us-gaap_OtherAssets"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssets" xlink:to="us-gaap_OtherAssets_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US"> Other Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherAssets_lbl" xml:lang="en-US"> Other assets </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US"> Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Assets_lbl" xml:lang="en-US"> ASSETS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="us-gaap_LiabilitiesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAbstract" xlink:to="us-gaap_LiabilitiesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xml:lang="en-US"> Liabilities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xml:lang="en-US"> LIABILITIES </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accounts Payable and Accrued Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accounts payable and accrued expenses </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DueToAffiliateCurrentAndNoncurrent" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueToAffiliateCurrentAndNoncurrent" xlink:to="us-gaap_DueToAffiliateCurrentAndNoncurrent_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent_lbl" xml:lang="en-US"> Due to Affiliate </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent_lbl" xml:lang="en-US"> Accounts payable affiliates (Note C) </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_CapitalContributionsPayable" xlink:label="bctciv_CapitalContributionsPayable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_CapitalContributionsPayable" xlink:to="bctciv_CapitalContributionsPayable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_CapitalContributionsPayable_lbl" xml:lang="en-US"> Carrying value of the capital contribution payable to operating partnerships. Under the terms of the Partnership's investment in each Operating Partnership, the Partnership is required to make capital contributions to the Operating Partnerships. These contributions are payable in installments over several years upon each Operating Partnership achieving specified levels of construction and/or operations. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_CapitalContributionsPayable_lbl" xml:lang="en-US"> Capital Contributions Payable </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_CapitalContributionsPayable_lbl" xml:lang="en-US"> Capital contributions payable </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US"> Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Liabilities_lbl" xml:lang="en-US"> LIABILITIES </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnersCapitalAbstract" xlink:label="us-gaap_PartnersCapitalAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAbstract" xlink:to="us-gaap_PartnersCapitalAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xml:lang="en-US"> Partners' Capital [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xml:lang="en-US"> PARTNERS' CAPITAL (DEFICIT) </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_AssignorLimitedPartnersInterestCapital" xlink:label="bctciv_AssignorLimitedPartnersInterestCapital"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_AssignorLimitedPartnersInterestCapital" xlink:to="bctciv_AssignorLimitedPartnersInterestCapital_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_AssignorLimitedPartnersInterestCapital_lbl" xml:lang="en-US"> The amount of the assignor limited partners' ownership interests. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_AssignorLimitedPartnersInterestCapital_lbl" xml:lang="en-US"> Assignor Limited Partners Interest Capital </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_AssignorLimitedPartnersInterestCapital_lbl" xml:lang="en-US"> Assignees limited partner </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralPartnersCapitalAccount" xlink:label="us-gaap_GeneralPartnersCapitalAccount"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralPartnersCapitalAccount" xlink:to="us-gaap_GeneralPartnersCapitalAccount_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xml:lang="en-US"> General Partners' Capital Account </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xml:lang="en-US"> General Partner </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnersCapital" xlink:label="us-gaap_PartnersCapital"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapital" xlink:to="us-gaap_PartnersCapital_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapital_lbl" xml:lang="en-US"> Partners' Capital </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_PartnersCapital_lbl" xml:lang="en-US"> Partners' capital (deficit), Ending balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_PartnersCapital_lbl" xml:lang="en-US"> Partners' capital (deficit), Beginning balance </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_PartnersCapital_lbl" xml:lang="en-US"> PARTNERS' CAPITAL (DEFICIT) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US"> Liabilities and Equity </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xml:lang="en-US"> LIABILITIES AND PARTNERS' CAPITAL (DEFICIT) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest" xlink:label="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest" xlink:to="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest_lbl" xml:lang="en-US"> Partners' Capital Account, Distribution Per Unit of Limited Partner Interest </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PartnersCapitalAccountDistributionPerUnitOfLimitedPartnerInterest_lbl" xml:lang="en-US"> Beneficial assignee certificate, par value (in dollars per share) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized_lbl" xml:lang="en-US"> Limited Partners' Capital Account, Units Authorized </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsAuthorized_lbl" xml:lang="en-US"> Units of limited partnership interest, authorized </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsIssued" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsIssued"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccountUnitsIssued" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsIssued_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/definitionGuidance" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsIssued_lbl" xml:lang="en-US"> BACs Sold </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsIssued_lbl" xml:lang="en-US"> Limited Partners' Capital Account, Units Issued </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsIssued_lbl" xml:lang="en-US"> Units of limited partnership interest, issued </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding" xlink:to="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding_lbl" xml:lang="en-US"> Limited Partners' Capital Account, Units Outstanding </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LimitedPartnersCapitalAccountUnitsOutstanding_lbl" xml:lang="en-US"> Units of limited partnership interest, outstanding </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xml:lang="en-US"> CONDENSED STATEMENTS OF OPERATIONS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="us-gaap_RevenuesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenuesAbstract" xlink:to="us-gaap_RevenuesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US"> Revenues [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US"> Revenues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RevenuesAbstract_lbl" xml:lang="en-US"> Income </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestIncomeOperating" xlink:label="us-gaap_InterestIncomeOperating"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestIncomeOperating" xlink:to="us-gaap_InterestIncomeOperating_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_InterestIncomeOperating_lbl" xml:lang="en-US"> Interest Income, Operating </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_InterestIncomeOperating_lbl" xml:lang="en-US"> Interest income </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIncome" xlink:label="us-gaap_OtherIncome"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherIncome" xlink:to="us-gaap_OtherIncome_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US"> Other Income </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OtherIncome_lbl" xml:lang="en-US"> Other income </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US"> Revenues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_Revenues_lbl" xml:lang="en-US"> Revenues </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal" xlink:to="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_lbl" xml:lang="en-US"> Equity Method Investment, Realized Gain (Loss) on Disposal </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_EquityMethodInvestmentRealizedGainLossOnDisposal_lbl" xml:lang="en-US"> Gain on disposition of Operating Partnerships (Note D) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="us-gaap_OperatingExpensesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpensesAbstract" xlink:to="us-gaap_OperatingExpensesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US"> Operating Expenses [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xml:lang="en-US"> Expenses </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="us-gaap_ProfessionalFees"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProfessionalFees" xlink:to="us-gaap_ProfessionalFees_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US"> Professional Fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProfessionalFees_lbl" xml:lang="en-US"> Professional fees </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_FundManagementFees" xlink:label="bctciv_FundManagementFees"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_FundManagementFees" xlink:to="bctciv_FundManagementFees_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_FundManagementFees_lbl" xml:lang="en-US"> Annual fund management fee charged on all apartment complexes owned by the Operating Partnerships net of reporting fees. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_FundManagementFees_lbl" xml:lang="en-US"> Fund Management Fees </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_FundManagementFees_lbl" xml:lang="en-US"> Fund management fee, net (Note C) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralAndAdministrativeExpense" xlink:to="us-gaap_GeneralAndAdministrativeExpense_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US"> General and Administrative Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xml:lang="en-US"> General and administrative expenses </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingExpenses" xlink:to="us-gaap_OperatingExpenses_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US"> Operating Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_OperatingExpenses_lbl" xml:lang="en-US"> Operating expenses </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US"> Net Income (Loss) Attributable to Parent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US"> Net income (loss) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US"> NET INCOME (LOSS) </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLoss_lbl" xml:lang="en-US"> Net income (loss) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAllocatedToLimitedPartners" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAllocatedToLimitedPartners" xlink:to="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xml:lang="en-US"> Net Income (Loss) Allocated to Limited Partners </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xml:lang="en-US"> Net income (loss) allocated to assignees </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossAllocatedToGeneralPartners" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossAllocatedToGeneralPartners" xlink:to="us-gaap_NetIncomeLossAllocatedToGeneralPartners_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners_lbl" xml:lang="en-US"> Net Income (Loss) Allocated to General Partners </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners_lbl" xml:lang="en-US"> Net income (loss) allocated to general partner </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax" xlink:to="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl" xml:lang="en-US"> Net Income (Loss), Per Outstanding Limited Partnership Unit, Basic, Net of Tax </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NetIncomeLossPerOutstandingLimitedPartnershipUnitBasicNetOfTax_lbl" xml:lang="en-US"> Net income (loss) per BAC </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfPartnersCapitalAbstract" xlink:label="us-gaap_StatementOfPartnersCapitalAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfPartnersCapitalAbstract" xlink:to="us-gaap_StatementOfPartnersCapitalAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfPartnersCapitalAbstract_lbl" xml:lang="en-US"> CONDENSED STATEMENTS OF CHANGES IN PARTNERS' CAPITAL (DEFICIT) </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:to="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_lbl" xml:lang="en-US"> Partner Type [Axis] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:to="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl" xml:lang="en-US"> Partner Type Of Partners Capital Account Name [Domain] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl" xml:lang="en-US"> Partner Type of Partners' Capital Account, Name [Domain] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_AssigneesMember" xlink:label="bctciv_AssigneesMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_AssigneesMember" xlink:to="bctciv_AssigneesMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_AssigneesMember_lbl" xml:lang="en-US"> Its represent Assignees. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_AssigneesMember_lbl" xml:lang="en-US"> Assignees [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_AssigneesMember_lbl" xml:lang="en-US"> Assignees [Member] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeneralPartnerMember" xlink:label="us-gaap_GeneralPartnerMember"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GeneralPartnerMember" xlink:to="us-gaap_GeneralPartnerMember_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GeneralPartnerMember_lbl" xml:lang="en-US"> General Partner [Member] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_GeneralPartnerMember_lbl" xml:lang="en-US"> General Partner [Member] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnersCapitalAccountContributions" xlink:label="us-gaap_PartnersCapitalAccountContributions"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountContributions" xlink:to="us-gaap_PartnersCapitalAccountContributions_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xml:lang="en-US"> Partners' Capital Account, Contributions </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xml:lang="en-US"> Contributions </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PartnersCapitalAccountDistributions" xlink:label="us-gaap_PartnersCapitalAccountDistributions"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PartnersCapitalAccountDistributions" xlink:to="us-gaap_PartnersCapitalAccountDistributions_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PartnersCapitalAccountDistributions_lbl" xml:lang="en-US"> Partners' Capital Account, Distributions </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PartnersCapitalAccountDistributions_lbl" xml:lang="en-US"> Distributions </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xml:lang="en-US"> CONDENSED STATEMENTS OF CASH FLOWS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US"> Cash flows from operating activities: </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US"> Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xml:lang="en-US"> Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromEquityMethodInvestments" xlink:to="us-gaap_IncomeLossFromEquityMethodInvestments_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US"> Income (Loss) from Equity Method Investments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncomeLossFromEquityMethodInvestments_lbl" xml:lang="en-US"> Gain on disposition of Operating Partnerships </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US"> Increase (Decrease) in Operating Capital [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xml:lang="en-US"> Changes in assets and liabilities </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xml:lang="en-US"> Increase in other assets </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xml:lang="en-US"> Increase (Decrease) in Accounts Payable and Accrued Liabilities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xml:lang="en-US"> (Decrease) Increase in accounts payable and accrued expenses </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInDueToAffiliates" xlink:label="us-gaap_IncreaseDecreaseInDueToAffiliates"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDueToAffiliates" xlink:to="us-gaap_IncreaseDecreaseInDueToAffiliates_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncreaseDecreaseInDueToAffiliates_lbl" xml:lang="en-US"> Increase (Decrease) in Due to Affiliates </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_IncreaseDecreaseInDueToAffiliates_lbl" xml:lang="en-US"> (Decrease) Increase in accounts payable affiliates </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xml:lang="en-US"> Net cash (used in) provided by operating activities </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xml:lang="en-US"> Cash flows from investing activities: </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:to="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl" xml:lang="en-US"> Proceeds from Sale of Equity Method Investments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl" xml:lang="en-US"> Proceeds from the disposition of Operating Partnerships </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ProceedsFromSaleOfEquityMethodInvestments_lbl" xml:lang="en-US"> Partnership Proceeds from Disposition * </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xml:lang="en-US"> Net cash provided by investing activities </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xml:lang="en-US"> Cash flows from financing activities: </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDistributionsToAffiliates" xlink:label="us-gaap_PaymentsOfDistributionsToAffiliates"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsOfDistributionsToAffiliates" xlink:to="us-gaap_PaymentsOfDistributionsToAffiliates_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_PaymentsOfDistributionsToAffiliates_lbl" xml:lang="en-US"> Payments of Distributions to Affiliates </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:label="us-gaap_PaymentsOfDistributionsToAffiliates_lbl" xml:lang="en-US"> Distributions </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xml:lang="en-US"> Net cash used in financing activities </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xml:lang="en-US"> INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US"> Cash and cash equivalents, ending </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xml:lang="en-US"> Cash and cash equivalents, beginning </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:to="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US"> Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xml:lang="en-US"> Supplemental schedule of noncash investing and financing activities: </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1" xlink:to="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1_lbl" xml:lang="en-US"> Noncash or Part Noncash Acquisition, Payables Assumed </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionPayablesAssumed1_lbl" xml:lang="en-US"> The general partner's equity balance was increased and accounts payable affiliates were reduced as a result of forgiveness of debt with an affiliate of the general partner. </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution" xlink:label="bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution" xlink:to="bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution_lbl" xml:lang="en-US"> The amount of receivables that an entity assumes in consideration for an asset received in a noncash (or part noncash) acquisition. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution_lbl" xml:lang="en-US"> Non Cash Or Part Non Cash Of Notes Receivables And Advances To Capital Contribution </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_NonCashOrPartNonCashOfNotesReceivablesAndAdvancesToCapitalContribution_lbl" xml:lang="en-US"> The Fund applied notes receivable and advances to its capital contribution obligation to Operating Partnerships. </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xml:lang="en-US"> ORGANIZATION </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock" xlink:to="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xml:lang="en-US"> Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_OrganizationConsolidationBasisOfPresentationBusinessDescriptionAndAccountingPoliciesTextBlock_lbl" xml:lang="en-US"> ORGANIZATION </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xml:lang="en-US"> ACCOUNTING AND FINANCIAL REPORTING POLICIES </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_SignificantAccountingPoliciesTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US"> Significant Accounting Policies [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="us-gaap_SignificantAccountingPoliciesTextBlock_lbl" xml:lang="en-US"> ACCOUNTING AND FINANCIAL REPORTING POLICIES </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="us-gaap_RelatedPartyTransactionsAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsAbstract" xlink:to="us-gaap_RelatedPartyTransactionsAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xml:lang="en-US"> RELATED PARTY TRANSACTIONS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:to="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US"> Related Party Transactions Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xml:lang="en-US"> RELATED PARTY TRANSACTIONS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract" xlink:to="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xml:lang="en-US"> INVESTMENTS IN OPERATING PARTNERSHIPS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentsDisclosureTextBlock" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityMethodInvestmentsDisclosureTextBlock" xlink:to="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xml:lang="en-US"> Equity Method Investments and Joint Ventures Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xml:lang="en-US"> INVESTMENTS IN OPERATING PARTNERSHIPS </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_TaxableLossAbstract" xlink:label="bctciv_TaxableLossAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_TaxableLossAbstract" xlink:to="bctciv_TaxableLossAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_TaxableLossAbstract_lbl" xml:lang="en-US"> TAXABLE LOSS </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_TaxableLossTextBlock" xlink:label="bctciv_TaxableLossTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_TaxableLossTextBlock" xlink:to="bctciv_TaxableLossTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_TaxableLossTextBlock_lbl" xml:lang="en-US"> This item represents the expected change in the Partnership's taxable loss for financial reporting purposes. This is primarily due to accounting differences in depreciation incurred by the Operating Partnerships and also differences between the equity method of accounting and IRS accounting methods </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_TaxableLossTextBlock_lbl" xml:lang="en-US"> Taxable Loss [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_TaxableLossTextBlock_lbl" xml:lang="en-US"> TAXABLE LOSS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxDisclosureAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xml:lang="en-US"> INCOME TAXES </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock" xlink:label="bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock" xlink:to="bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock_lbl" xml:lang="en-US"> Description containing the income tax disclosure relating to partnership that has elected to be treated as a pass-through entity for income tax purposes and, as such, is not subject to income taxes </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock_lbl" xml:lang="en-US"> Income Tax Relating To Partnership Disclosure [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_IncomeTaxRelatingToPartnershipDisclosureTextBlock_lbl" xml:lang="en-US"> INCOME TAXES </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="us-gaap_SubsequentEventsAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsAbstract" xlink:to="us-gaap_SubsequentEventsAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xml:lang="en-US"> SUBSEQUENT EVENTS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="us-gaap_SubsequentEventsTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsequentEventsTextBlock" xlink:to="us-gaap_SubsequentEventsTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US"> Subsequent Events [Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xml:lang="en-US"> SUBSEQUENT EVENTS </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTextBlock" xlink:label="us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTextBlock" xlink:to="us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTextBlock_lbl" xml:lang="en-US"> Schedule of Limited Partners' Capital Account by Class [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTextBlock_lbl" xml:lang="en-US"> Schedule of BACs sold and total equity </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfGrossManagementFeeTableTextBlock" xlink:label="bctciv_ScheduleOfGrossManagementFeeTableTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfGrossManagementFeeTableTextBlock" xlink:to="bctciv_ScheduleOfGrossManagementFeeTableTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ScheduleOfGrossManagementFeeTableTextBlock_lbl" xml:lang="en-US"> Tabular disclosure of gross management fee. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfGrossManagementFeeTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Gross Management Fee [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_ScheduleOfGrossManagementFeeTableTextBlock_lbl" xml:lang="en-US"> Schedule of fund management fees accrued </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfManagementFeesPaidTableTextBlock" xlink:label="bctciv_ScheduleOfManagementFeesPaidTableTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfManagementFeesPaidTableTextBlock" xlink:to="bctciv_ScheduleOfManagementFeesPaidTableTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ScheduleOfManagementFeesPaidTableTextBlock_lbl" xml:lang="en-US"> Tabular disclosure for management fees paid. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfManagementFeesPaidTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Management Fees Paid [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_ScheduleOfManagementFeesPaidTableTextBlock_lbl" xml:lang="en-US"> Schedule of management fees paid </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock" xlink:to="bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US"> Tabular disclosure for number of operating partnerships. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Number Of Operating Partnerships [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Operating Partnerships Within the Fund </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfContributionsPayableTableTextBlock" xlink:label="bctciv_ScheduleOfContributionsPayableTableTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfContributionsPayableTableTextBlock" xlink:to="bctciv_ScheduleOfContributionsPayableTableTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ScheduleOfContributionsPayableTableTextBlock_lbl" xml:lang="en-US"> Tabular disclosure for contributions payable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfContributionsPayableTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Contributions Payable [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_ScheduleOfContributionsPayableTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Contributions Payable </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfDispositionsBySeriesTableTextBlock" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTableTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfDispositionsBySeriesTableTextBlock" xlink:to="bctciv_ScheduleOfDispositionsBySeriesTableTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTableTextBlock_lbl" xml:lang="en-US"> Tabular disclosure for dispositions by series. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Dispositions By Series [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Dispositions By Series </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock" xlink:to="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US"> Tabular disclosure for summarized statement of operations in operating partnerships. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US"> Schedule Of Summarized Statement Of Operations In Operating Partnerships [Table Text Block] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTableTextBlock_lbl" xml:lang="en-US"> Schedule of accordingly, the current financial results available for the Operating Partnerships </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfCapitalUnitsTable" xlink:label="us-gaap_ScheduleOfCapitalUnitsTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCapitalUnitsTable" xlink:to="us-gaap_ScheduleOfCapitalUnitsTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfCapitalUnitsTable_lbl" xml:lang="en-US"> Schedule of Capital Units [Table] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CapitalUnitLineItems" xlink:label="us-gaap_CapitalUnitLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CapitalUnitLineItems" xlink:to="us-gaap_CapitalUnitLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_CapitalUnitLineItems_lbl" xml:lang="en-US"> Capital Unit </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ClosingDateOfUnitsIssuedAndEquityRaised" xlink:label="bctciv_ClosingDateOfUnitsIssuedAndEquityRaised"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ClosingDateOfUnitsIssuedAndEquityRaised" xlink:to="bctciv_ClosingDateOfUnitsIssuedAndEquityRaised_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ClosingDateOfUnitsIssuedAndEquityRaised_lbl" xml:lang="en-US"> Closing date of units issued and equity raised. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ClosingDateOfUnitsIssuedAndEquityRaised_lbl" xml:lang="en-US"> Closing Date Of Units Issued And Equity Raised </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_ClosingDateOfUnitsIssuedAndEquityRaised_lbl" xml:lang="en-US"> Closing Date </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LimitedPartnersContributedCapital" xlink:label="us-gaap_LimitedPartnersContributedCapital"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LimitedPartnersContributedCapital" xlink:to="us-gaap_LimitedPartnersContributedCapital_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_LimitedPartnersContributedCapital_lbl" xml:lang="en-US"> Limited Partners' Contributed Capital </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_LimitedPartnersContributedCapital_lbl" xml:lang="en-US"> Equity Raised </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_LimitedPartnersCapitalAccountPerUnits" xlink:label="bctciv_LimitedPartnersCapitalAccountPerUnits"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_LimitedPartnersCapitalAccountPerUnits" xlink:to="bctciv_LimitedPartnersCapitalAccountPerUnits_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_LimitedPartnersCapitalAccountPerUnits_lbl" xml:lang="en-US"> Per unit rate of limited partners capital account. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_LimitedPartnersCapitalAccountPerUnits_lbl" xml:lang="en-US"> Limited Partners Capital Account Per Units </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_LimitedPartnersCapitalAccountPerUnits_lbl" xml:lang="en-US"> Limited Partners Capital Account Per Units </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale" xlink:label="bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale" xlink:to="bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale_lbl" xml:lang="en-US"> The number of limited partner units authorized to be issued. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale_lbl" xml:lang="en-US"> Limited Partners Capital Account Units Authorized for Sale </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_LimitedPartnersCapitalAccountUnitsAuthorizedForSale_lbl" xml:lang="en-US"> Units of limited partnership interest, authorized </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_LimitedPartnersCapitalAccountAdditionalUnitsRegisteredForSale" xlink:label="bctciv_LimitedPartnersCapitalAccountAdditionalUnitsRegisteredForSale"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_LimitedPartnersCapitalAccountAdditionalUnitsRegisteredForSale" xlink:to="bctciv_LimitedPartnersCapitalAccountAdditionalUnitsRegisteredForSale_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_LimitedPartnersCapitalAccountAdditionalUnitsRegisteredForSale_lbl" xml:lang="en-US"> The additional number of limited partners units registered for sale. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_LimitedPartnersCapitalAccountAdditionalUnitsRegisteredForSale_lbl" xml:lang="en-US"> Limited Partners Capital Account Additional Units Registered For Sale </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xml:lang="en-US"> Schedule of Related Party Transactions, by Related Party [Table] </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="us-gaap_RelatedPartyTransactionLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_RelatedPartyTransactionLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xml:lang="en-US"> Related Party Transaction [Line Items] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_GrossManagementFee" xlink:label="bctciv_GrossManagementFee"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_GrossManagementFee" xlink:to="bctciv_GrossManagementFee_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_GrossManagementFee_lbl" xml:lang="en-US"> Gross amount of management fee during the period. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_GrossManagementFee_lbl" xml:lang="en-US"> Gross Management Fee </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_GrossManagementFee_lbl" xml:lang="en-US"> Gross Fund Management Fee </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ManagementFeeExpense" xlink:label="us-gaap_ManagementFeeExpense"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ManagementFeeExpense" xlink:to="us-gaap_ManagementFeeExpense_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_ManagementFeeExpense_lbl" xml:lang="en-US"> Management Fee Expense </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="us-gaap_ManagementFeeExpense_lbl" xml:lang="en-US"> Fund management fees paid </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_PercentageOfAnnualManagementFee" xlink:label="bctciv_PercentageOfAnnualManagementFee"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_PercentageOfAnnualManagementFee" xlink:to="bctciv_PercentageOfAnnualManagementFee_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_PercentageOfAnnualManagementFee_lbl" xml:lang="en-US"> The percentage of annual management fee. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_PercentageOfAnnualManagementFee_lbl" xml:lang="en-US"> Percentage Of Annual Management Fee </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_PercentageOfAnnualManagementFee_lbl" xml:lang="en-US"> Percentage Of Annual Management Fee </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfNumberOfOperatingPartnershipsTable" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable" xlink:to="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfNumberOfOperatingPartnershipsTable_lbl" xml:lang="en-US"> Schedule Of Number Of Operating Partnerships [Table] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_NumberOfOperatingPartnershipsLineItems" xlink:label="bctciv_NumberOfOperatingPartnershipsLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_NumberOfOperatingPartnershipsLineItems" xlink:to="bctciv_NumberOfOperatingPartnershipsLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_NumberOfOperatingPartnershipsLineItems_lbl" xml:lang="en-US"> Number Of Operating Partnerships </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_NumberOfOperatingPartnerships" xlink:label="bctciv_NumberOfOperatingPartnerships"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_NumberOfOperatingPartnerships" xlink:to="bctciv_NumberOfOperatingPartnerships_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_NumberOfOperatingPartnerships_lbl" xml:lang="en-US"> Number of operating partnerships. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_NumberOfOperatingPartnerships_lbl" xml:lang="en-US"> Number Of Operating Partnerships. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_NumberOfOperatingPartnerships_lbl" xml:lang="en-US"> Number Of Operating Partnerships </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfContributionsPayableTable" xlink:label="bctciv_ScheduleOfContributionsPayableTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfContributionsPayableTable" xlink:to="bctciv_ScheduleOfContributionsPayableTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfContributionsPayableTable_lbl" xml:lang="en-US"> Schedule Of Contributions Payable [Table] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ContributionsPayableLineItems" xlink:label="bctciv_ContributionsPayableLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ContributionsPayableLineItems" xlink:to="bctciv_ContributionsPayableLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ContributionsPayableLineItems_lbl" xml:lang="en-US"> Contributions Payable </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfDispositionsBySeriesTable" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfDispositionsBySeriesTable" xlink:to="bctciv_ScheduleOfDispositionsBySeriesTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfDispositionsBySeriesTable_lbl" xml:lang="en-US"> Schedule Of Dispositions By Series [Table] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_DispositionsBySeriesDisclosureLineItems" xlink:label="bctciv_DispositionsBySeriesDisclosureLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_DispositionsBySeriesDisclosureLineItems" xlink:to="bctciv_DispositionsBySeriesDisclosureLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_DispositionsBySeriesDisclosureLineItems_lbl" xml:lang="en-US"> Dispositions By Series Disclosure </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipInterestTransferred" xlink:label="bctciv_OperatingPartnershipInterestTransferred"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipInterestTransferred" xlink:to="bctciv_OperatingPartnershipInterestTransferred_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipInterestTransferred_lbl" xml:lang="en-US"> The number of operating partnership interest transferred. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipInterestTransferred_lbl" xml:lang="en-US"> Operating Partnership Interest Transferred </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_OperatingPartnershipInterestTransferred_lbl" xml:lang="en-US"> Operating Partnership Interest Transferred </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SaleOfUnderlyingOperatingPartnership" xlink:label="bctciv_SaleOfUnderlyingOperatingPartnership"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SaleOfUnderlyingOperatingPartnership" xlink:to="bctciv_SaleOfUnderlyingOperatingPartnership_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_SaleOfUnderlyingOperatingPartnership_lbl" xml:lang="en-US"> The number of sale of underlying operating partnership. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SaleOfUnderlyingOperatingPartnership_lbl" xml:lang="en-US"> Sale Of Underlying Operating Partnership </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_SaleOfUnderlyingOperatingPartnership_lbl" xml:lang="en-US"> Sale of Underlying Operating Partnership </label>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSaleOfInvestments" xlink:label="us-gaap_GainLossOnSaleOfInvestments"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfInvestments" xlink:to="us-gaap_GainLossOnSaleOfInvestments_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xml:lang="en-US"> Gain (Loss) on Sale of Investments </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/presentationGuidance" xlink:label="us-gaap_GainLossOnSaleOfInvestments_lbl" xml:lang="en-US"> Gain on Disposition </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable" xlink:to="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ScheduleOfSummarizedStatementOfOperationsInOperatingPartnershipsTable_lbl" xml:lang="en-US"> Schedule Of Summarized Statement Of Operations In Operating Partnerships [Table] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:label="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems" xlink:to="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_SummarizedStatementOfOperationsInOperatingPartnershipsLineItems_lbl" xml:lang="en-US"> Summarized Statement Of Operations In Operating Partnerships </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsRentalIncome" xlink:label="bctciv_OperatingPartnershipsRentalIncome"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsRentalIncome" xlink:to="bctciv_OperatingPartnershipsRentalIncome_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsRentalIncome_lbl" xml:lang="en-US"> The amount of rental income by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsRentalIncome_lbl" xml:lang="en-US"> Operating Partnerships Rental Income </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsRentalIncome_lbl" xml:lang="en-US"> Rental </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsInterestAndOtherIncome" xlink:label="bctciv_OperatingPartnershipsInterestAndOtherIncome"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsInterestAndOtherIncome" xlink:to="bctciv_OperatingPartnershipsInterestAndOtherIncome_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsInterestAndOtherIncome_lbl" xml:lang="en-US"> The amount of interest and other income by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsInterestAndOtherIncome_lbl" xml:lang="en-US"> Operating Partnerships Interest and Other Income </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsInterestAndOtherIncome_lbl" xml:lang="en-US"> Interest and other </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsRevenues" xlink:label="bctciv_OperatingPartnershipsRevenues"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsRevenues" xlink:to="bctciv_OperatingPartnershipsRevenues_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsRevenues_lbl" xml:lang="en-US"> The amount of revenues by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsRevenues_lbl" xml:lang="en-US"> Operating Partnerships Revenues </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="bctciv_OperatingPartnershipsRevenues_lbl" xml:lang="en-US"> Operating Partnerships Revenues </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ExpensesAbstract" xlink:label="bctciv_ExpensesAbstract"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ExpensesAbstract" xlink:to="bctciv_ExpensesAbstract_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ExpensesAbstract_lbl" xml:lang="en-US"> Expenses [Abstract] </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_ExpensesAbstract_lbl" xml:lang="en-US"> Expenses </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsInterestExpenses" xlink:label="bctciv_OperatingPartnershipsInterestExpenses"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsInterestExpenses" xlink:to="bctciv_OperatingPartnershipsInterestExpenses_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsInterestExpenses_lbl" xml:lang="en-US"> The amount of interest expenses by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsInterestExpenses_lbl" xml:lang="en-US"> Operating Partnerships Interest Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsInterestExpenses_lbl" xml:lang="en-US"> Interest </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsDepreciationAndAmortization" xlink:label="bctciv_OperatingPartnershipsDepreciationAndAmortization"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsDepreciationAndAmortization" xlink:to="bctciv_OperatingPartnershipsDepreciationAndAmortization_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsDepreciationAndAmortization_lbl" xml:lang="en-US"> The amount of depreciation and amortization by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsDepreciationAndAmortization_lbl" xml:lang="en-US"> Operating Partnerships Depreciation and Amortization </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsDepreciationAndAmortization_lbl" xml:lang="en-US"> Depreciation and amortization </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsOperatingExpenses" xlink:label="bctciv_OperatingPartnershipsOperatingExpenses"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsOperatingExpenses" xlink:to="bctciv_OperatingPartnershipsOperatingExpenses_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsOperatingExpenses_lbl" xml:lang="en-US"> The amount of operating expenses by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsOperatingExpenses_lbl" xml:lang="en-US"> Operating Partnerships Operating Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsOperatingExpenses_lbl" xml:lang="en-US"> Operating expenses </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsTotalExpenses" xlink:label="bctciv_OperatingPartnershipsTotalExpenses"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsTotalExpenses" xlink:to="bctciv_OperatingPartnershipsTotalExpenses_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsTotalExpenses_lbl" xml:lang="en-US"> The amount of total expenses by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsTotalExpenses_lbl" xml:lang="en-US"> Operating Partnerships Total Expenses </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="bctciv_OperatingPartnershipsTotalExpenses_lbl" xml:lang="en-US"> Operating Partnerships Total Expenses </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsNetIncomeLoss" xlink:label="bctciv_OperatingPartnershipsNetIncomeLoss"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsNetIncomeLoss" xlink:to="bctciv_OperatingPartnershipsNetIncomeLoss_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsNetIncomeLoss_lbl" xml:lang="en-US"> The amount of net income (loss) by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsNetIncomeLoss_lbl" xml:lang="en-US"> Operating Partnerships Net Income Loss </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="bctciv_OperatingPartnershipsNetIncomeLoss_lbl" xml:lang="en-US"> NET LOSS </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent" xlink:to="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent_lbl" xml:lang="en-US"> The amount of net income (loss) allocated to parent by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent_lbl" xml:lang="en-US"> Operating Partnerships Net Income Loss Allocated To Parent </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToParent_lbl" xml:lang="en-US"> Net loss allocated to Boston Capital Tax Credit Fund IV L.P. </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners" xlink:to="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners_lbl" xml:lang="en-US"> The amount of net income (loss) allocated to other partners by an operating partnerships of the entity. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners_lbl" xml:lang="en-US"> Operating Partnerships Net Income Loss Allocated To Other Partners </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:label="bctciv_OperatingPartnershipsNetIncomeLossAllocatedToOtherPartners_lbl" xml:lang="en-US"> Net loss allocated to other Partners </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_InvestmentsInOperatingLimitedPartnershipsTable" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsTable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsTable" xlink:to="bctciv_InvestmentsInOperatingLimitedPartnershipsTable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsTable_lbl" xml:lang="en-US"> Investments In Operating Limited Partnerships [Table] </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems" xlink:to="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_InvestmentsInOperatingLimitedPartnershipsLineItems_lbl" xml:lang="en-US"> Investments In Operating Limited Partnerships </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_WriteOffOfCapitalContributionPayable" xlink:label="bctciv_WriteOffOfCapitalContributionPayable"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_WriteOffOfCapitalContributionPayable" xlink:to="bctciv_WriteOffOfCapitalContributionPayable_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_WriteOffOfCapitalContributionPayable_lbl" xml:lang="en-US"> Amount of write off of capital contribution payable. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_WriteOffOfCapitalContributionPayable_lbl" xml:lang="en-US"> Write Off Of Capital Contribution Payable </label>
<loc xlink:type="locator" xlink:href="bctciv-20191231.xsd#bctciv_ReceivableFromSaleOfEquityInvestment" xlink:label="bctciv_ReceivableFromSaleOfEquityInvestment"/>
<labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bctciv_ReceivableFromSaleOfEquityInvestment" xlink:to="bctciv_ReceivableFromSaleOfEquityInvestment_lbl"/>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:label="bctciv_ReceivableFromSaleOfEquityInvestment_lbl" xml:lang="en-US"> Amount of receivable from sale of equity investment. </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="bctciv_ReceivableFromSaleOfEquityInvestment_lbl" xml:lang="en-US"> Receivable From Sale Of Equity Investment </label>
<label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:label="bctciv_ReceivableFromSaleOfEquityInvestment_lbl" xml:lang="en-US"> Receivable from sale of equity investment </label>
</labelLink>
</linkbase>

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