<?xml version="1.0" encoding="UTF-8"?>
<!--XBRL Document Modified with Ez-Viewer Version 1.0.5.8 on Tuesday, November 06, 2012 10:20:47 PM -->
<!--XBRL Document Modified with Ez-Editor Version 1.0.1.4 by DataTracks on Wednesday, November 07, 2012 05:09:24 PM -->
<!--XBRL Document Modified with Ez-Editor Version 1.0.2.0 by DataTracks on Friday, November 09, 2012 11:43:56 AM -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef xlink:type="simple" xlink:href="bctciii-20120930.xsd#StatementOfFinancialPositionUnclassified-RealEstateOperations" roleURI="http://www.bostoncapital.com/role/StatementOfFinancialPositionUnclassified-RealEstateOperations"/>
<calculationLink xlink:type="extended" xlink:role="http://www.bostoncapital.com/role/StatementOfFinancialPositionUnclassified-RealEstateOperations">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets" xlink:to="loc_us-gaap_OtherAssets" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DueToAffiliateCurrentAndNoncurrent" xlink:label="loc_us-gaap_DueToAffiliateCurrentAndNoncurrent"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_us-gaap_DueToAffiliateCurrentAndNoncurrent" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_CapitalContributionsPayable" xlink:label="loc_bctciii_CapitalContributionsPayable"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities" xlink:to="loc_bctciii_CapitalContributionsPayable" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PartnersCapital" xlink:label="loc_us-gaap_PartnersCapital"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LimitedPartnersCapitalAccount" xlink:label="loc_us-gaap_LimitedPartnersCapitalAccount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapital" xlink:to="loc_us-gaap_LimitedPartnersCapitalAccount" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GeneralPartnersCapitalAccount" xlink:label="loc_us-gaap_GeneralPartnersCapitalAccount"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapital" xlink:to="loc_us-gaap_GeneralPartnersCapitalAccount" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaap_Liabilities" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaap_PartnersCapital" order="20" use="optional" weight="1"/></calculationLink>



<roleRef xlink:type="simple" xlink:href="bctciii-20120930.xsd#StatementOfIncomeRealEstateExcludingREITs" roleURI="http://www.bostoncapital.com/role/StatementOfIncomeRealEstateExcludingREITs"/>
<calculationLink xlink:type="extended" xlink:role="http://www.bostoncapital.com/role/StatementOfIncomeRealEstateExcludingREITs">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InterestIncomeOperating" xlink:label="loc_us-gaap_InterestIncomeOperating"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues" xlink:to="loc_us-gaap_InterestIncomeOperating" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherIncome" xlink:label="loc_us-gaap_OtherIncome"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues" xlink:to="loc_us-gaap_OtherIncome" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_TotalExpenses" xlink:label="loc_bctciii_TotalExpenses"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="loc_us-gaap_ProfessionalFees"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_TotalExpenses" xlink:to="loc_us-gaap_ProfessionalFees" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_FundManagementFee" xlink:label="loc_bctciii_FundManagementFee"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_TotalExpenses" xlink:to="loc_bctciii_FundManagementFee" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_TotalExpenses" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense" order="30" use="optional" weight="1"/></calculationLink>

<roleRef xlink:type="simple" xlink:href="bctciii-20120930.xsd#StatementOfCashFlowsIndirectRealEstate" roleURI="http://www.bostoncapital.com/role/StatementOfCashFlowsIndirectRealEstate"/>
<calculationLink xlink:type="extended" xlink:role="http://www.bostoncapital.com/role/StatementOfCashFlowsIndirectRealEstate">
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_NetIncomeLoss" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments" order="20" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities" order="30" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets" order="40" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInDueToAffiliates" xlink:label="loc_us-gaap_IncreaseDecreaseInDueToAffiliates"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaap_IncreaseDecreaseInDueToAffiliates" order="50" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromSaleOfEquityMethodInvestments" xlink:label="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaap_ProceedsFromSaleOfEquityMethodInvestments" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities" order="30" use="optional" weight="1"/></calculationLink>


<roleRef xlink:type="simple" xlink:href="bctciii-20120930.xsd#InvestmentsInOperatingPartnershipsDetails3" roleURI="http://www.bostoncapital.com/role/InvestmentsInOperatingPartnershipsDetails3"/>
<calculationLink xlink:type="extended" xlink:role="http://www.bostoncapital.com/role/InvestmentsInOperatingPartnershipsDetails3">
<loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsRevenues" xlink:label="loc_bctciii_OperatingPartnershipsRevenues"/>
<loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsRentalIncome" xlink:label="loc_bctciii_OperatingPartnershipsRentalIncome"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsRevenues" xlink:to="loc_bctciii_OperatingPartnershipsRentalIncome" order="10" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsInterestAndOtherIncome" xlink:label="loc_bctciii_OperatingPartnershipsInterestAndOtherIncome"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsRevenues" xlink:to="loc_bctciii_OperatingPartnershipsInterestAndOtherIncome" order="20" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsTotalExpenses" xlink:label="loc_bctciii_OperatingPartnershipsTotalExpenses"/><loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsInterestExpenses" xlink:label="loc_bctciii_OperatingPartnershipsInterestExpenses"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsTotalExpenses" xlink:to="loc_bctciii_OperatingPartnershipsInterestExpenses" order="10" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsDepreciationAndAmortization" xlink:label="loc_bctciii_OperatingPartnershipsDepreciationAndAmortization"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsTotalExpenses" xlink:to="loc_bctciii_OperatingPartnershipsDepreciationAndAmortization" order="20" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsOperatingExpenses" xlink:label="loc_bctciii_OperatingPartnershipsOperatingExpenses"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsTotalExpenses" xlink:to="loc_bctciii_OperatingPartnershipsOperatingExpenses" order="30" use="optional" weight="1"/><loc xlink:type="locator" xlink:href="bctciii-20120930.xsd#bctciii_OperatingPartnershipsNetLoss" xlink:label="loc_bctciii_OperatingPartnershipsNetLoss"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsNetLoss" xlink:to="loc_bctciii_OperatingPartnershipsRevenues" order="10" use="optional" weight="1"/><calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_bctciii_OperatingPartnershipsNetLoss" xlink:to="loc_bctciii_OperatingPartnershipsTotalExpenses" order="20" use="optional" weight="-1"/></calculationLink>


</linkbase>
