"You are an auditor for XBRL filings. \nGiven two concepts and the provided filing (schema, presentation, calculation, definition, label, instance, and US GAAP taxonomy),\ndetermine which one of the following erroneous relationship types best describes the relationship between the two concepts:\n\n(1) Reversal  \n    Definition: A relationship is flagged as Reversal when the filer\u2019s extension taxonomy redefines element hierarchy inconsistently with the US GAAP taxonomy. Specifically, this occurs when an element that should be a sibling in the US GAAP taxonomy is instead defined as a child of another element (or vice versa, a child element is incorrectly redefined as a sibling).\n\n(2) Inappropriateness  \n    Definition: A relationship is flagged as Inappropriateness when elements appear under an abstract category where they do not belong, contrary to the US GAAP taxonomy.\n\n(3) CombinationErr  \n    Definition: A relationship is flagged as CombinationErr when an axis in the filer\u2019s extension taxonomy is associated with inappropriate members not permitted by the US GAAP taxonomy.\n\nYou must reference the US GAAP taxonomy to retrieve and check the two concepts across the entire filing.\nOutput only one of the following labels exactly, chosen strictly from:\n[\"Reversal\", \"Inappropriateness\", \"CombinationErr\"].\n\nNo explanations. No extra text. Only the label.\n\n    \n##Schema document\nNone\n\n##Presentation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.bxp.com/role/SegmentInformationScheduleOfReconciliationOfNetOperatingIncomeToNetIncomeDetails\" xlink:type=\"simple\" xlink:href=\"bxp-20240630.xsd#SegmentInformationScheduleOfReconciliationOfNetOperatingIncomeToNetIncomeDetails\"/>\n  <link:presentationLink xlink:role=\"http://www.bxp.com/role/SegmentInformationScheduleOfReconciliationOfNetOperatingIncomeToNetIncomeDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentReportingAbstract_adb0df7d-15ba-498d-9a3b-8c3845d410e2\" 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<link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable_cc742d69-478a-42e9-8217-ea62cd4c5444\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable_cc742d69-478a-42e9-8217-ea62cd4c5444\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_InterestExpense_bdb710df-56c7-4ed4-8cd8-4dc7f214c946\" 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xlink:to=\"loc_us-gaap_IncomeLossFromEquityMethodInvestments_520d0841-7aac-4719-bef3-2c1fd866236d\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedTerseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DepreciationAndAmortization_41cd30e7-892c-417b-b5c5-7f6b464f6c93\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization\"/>\n    <link:presentationArc order=\"10\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_DepreciationAndAmortization_41cd30e7-892c-417b-b5c5-7f6b464f6c93\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedTerseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OtherCostAndExpenseOperating_c2beba11-c85c-4f79-ad9e-a1afade750a5\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCostAndExpenseOperating\"/>\n    <link:presentationArc order=\"11\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_OtherCostAndExpenseOperating_c2beba11-c85c-4f79-ad9e-a1afade750a5\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CostOfGoodsAndServicesSold_d6fcbfee-c75e-481d-9cea-4e747b599108\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfGoodsAndServicesSold\"/>\n    <link:presentationArc order=\"12\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_CostOfGoodsAndServicesSold_d6fcbfee-c75e-481d-9cea-4e747b599108\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GeneralAndAdministrativeExpense_9e90382e-7c7b-4563-a245-a329db310c7a\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpense\"/>\n    <link:presentationArc order=\"13\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_GeneralAndAdministrativeExpense_9e90382e-7c7b-4563-a245-a329db310c7a\" xlink:type=\"arc\" 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<link:presentationArc order=\"15\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_GainLossOnInvestments_3f95be4e-bea3-4659-bf10-fb86b0e078f4\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2009/role/negatedTerseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OtherIncome_4e297bf8-ffa7-4e1e-a3bd-d32c663982d5\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherIncome\"/>\n    <link:presentationArc order=\"16\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_OtherIncome_4e297bf8-ffa7-4e1e-a3bd-d32c663982d5\" xlink:type=\"arc\" 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xlink:label=\"loc_bxp_NetOperatingIncome_20f84693-dddc-497d-9b5d-31e4f38c70a2\" xlink:href=\"bxp-20240630.xsd#bxp_NetOperatingIncome\"/>\n    <link:presentationArc order=\"21\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_bxp_NetOperatingIncome_20f84693-dddc-497d-9b5d-31e4f38c70a2\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/totalLabel\"/>\n  </link:presentationLink>\n  </link:linkbase>\n\n\n##Calculation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.bxp.com/role/SegmentInformationScheduleOfReconciliationOfNetOperatingIncomeToNetIncomeDetails\" xlink:type=\"simple\" xlink:href=\"bxp-20240630.xsd#SegmentInformationScheduleOfReconciliationOfNetOperatingIncomeToNetIncomeDetails\"/>\n  <link:calculationLink xlink:role=\"http://www.bxp.com/role/SegmentInformationScheduleOfReconciliationOfNetOperatingIncomeToNetIncomeDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:href=\"bxp-20240630.xsd#bxp_NetOperatingIncome\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_3a69d9b6-8cef-47a3-b4bc-5c6d41b70c64\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\"/>\n    <link:calculationArc order=\"1\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_3a69d9b6-8cef-47a3-b4bc-5c6d41b70c64\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable_6c333cc1-9101-4268-8e44-23e68ed30926\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable\"/>\n    <link:calculationArc order=\"2\" weight=\"-1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable_6c333cc1-9101-4268-8e44-23e68ed30926\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_InterestAndOtherIncome_d321259a-7bc8-41f4-ae68-2a7f38a9a802\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestAndOtherIncome\"/>\n    <link:calculationArc order=\"3\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_InterestAndOtherIncome_d321259a-7bc8-41f4-ae68-2a7f38a9a802\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_5bcec1ce-5149-4897-8932-f783c3bd6b2b\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\"/>\n    <link:calculationArc order=\"4\" weight=\"-1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_5bcec1ce-5149-4897-8932-f783c3bd6b2b\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GainLossOnInvestments_76c6570f-6ec6-4f07-a5b4-d2badbf43dec\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnInvestments\"/>\n    <link:calculationArc order=\"5\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_GainLossOnInvestments_76c6570f-6ec6-4f07-a5b4-d2badbf43dec\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_InterestExpense_da6aac2e-d70f-4942-a767-9609e9bf130c\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpense\"/>\n    <link:calculationArc order=\"6\" weight=\"-1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_InterestExpense_da6aac2e-d70f-4942-a767-9609e9bf130c\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss_1af27197-a246-4a6b-bbe0-d36d7f681f1e\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\"/>\n    <link:calculationArc order=\"7\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss_1af27197-a246-4a6b-bbe0-d36d7f681f1e\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OtherIncome_a455272e-ed35-4b78-bfb9-08fc4fa01883\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherIncome\"/>\n    <link:calculationArc order=\"8\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_OtherIncome_a455272e-ed35-4b78-bfb9-08fc4fa01883\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_43627a38-6a91-49b1-ba30-0fb8e3fb5dfe\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt\"/>\n    <link:calculationArc order=\"9\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_43627a38-6a91-49b1-ba30-0fb8e3fb5dfe\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_IncomeLossFromEquityMethodInvestments_87d19b1e-e7d5-43b0-96cf-1e8a067eb653\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeLossFromEquityMethodInvestments\"/>\n    <link:calculationArc order=\"10\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_IncomeLossFromEquityMethodInvestments_87d19b1e-e7d5-43b0-96cf-1e8a067eb653\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GeneralAndAdministrativeExpense_f3e8b230-6854-41f6-8321-fcfbf4764143\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpense\"/>\n    <link:calculationArc order=\"11\" weight=\"-1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_GeneralAndAdministrativeExpense_f3e8b230-6854-41f6-8321-fcfbf4764143\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_991ad03d-0602-4701-a8f7-0e0ade6a7b65\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact\"/>\n    <link:calculationArc order=\"12\" weight=\"-1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_991ad03d-0602-4701-a8f7-0e0ade6a7b65\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_PreferredStockRedemptionPremium_63c5e23d-8d2e-4c61-a0d6-f36216d5a177\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PreferredStockRedemptionPremium\"/>\n    <link:calculationArc 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xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_OtherCostAndExpenseOperating_ad5925ae-cf6a-40d1-927c-a5b58e0dc5c7\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCostAndExpenseOperating\"/>\n    <link:calculationArc order=\"17\" weight=\"-1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_OtherCostAndExpenseOperating_ad5925ae-cf6a-40d1-927c-a5b58e0dc5c7\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GrossProfit_d605fc85-9c8a-426e-9eb4-31e6bf48b64e\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GrossProfit\"/>\n    <link:calculationArc order=\"18\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_GrossProfit_d605fc85-9c8a-426e-9eb4-31e6bf48b64e\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_6f2d6297-0b3b-4fe3-a187-a6adec5d3f2d\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic\"/>\n    <link:calculationArc order=\"19\" weight=\"1.0\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_bxp_NetOperatingIncome_f9f45792-c9b3-4036-a45c-201371603f51\" xlink:to=\"loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_6f2d6297-0b3b-4fe3-a187-a6adec5d3f2d\" xlink:type=\"arc\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_UnrealizedGainLossOnInvestments_ee7fb0a4-d020-49df-98ab-f9f881c0c6b9\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnrealizedGainLossOnInvestments\"/>\n    <link:calculationArc order=\"20\" 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xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_c7b620aa-d55f-44d9-97fb-cbc718d85342\" xlink:type=\"arc\" order=\"19\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_NetOperatingIncome_20f84693-dddc-497d-9b5d-31e4f38c70a2\" xlink:href=\"bxp-20240630.xsd#bxp_NetOperatingIncome\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_df89c991-506e-4c42-8bfb-5fc5bd9873ba\" xlink:to=\"loc_bxp_NetOperatingIncome_20f84693-dddc-497d-9b5d-31e4f38c70a2\" xlink:type=\"arc\" order=\"20\"/>\n  </link:definitionLink>\n  </link:linkbase>\n\n\n##Label linkbase document\n<?xml version='1.0' encoding='UTF-8'?>\n<link:linkbase xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodStartLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/netLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedNetLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodEndLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel\"/>\n  <link:roleRef roleURI=\"http://www.xbrl.org/2009/role/negatedTotalLabel\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel\"/>\n  <link:labelLink xlink:role=\"http://www.xbrl.org/2003/role/link\" xlink:type=\"extended\"><link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_ProductOrServiceAxis\" xlink:href=\"https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_ProductOrServiceAxis\" xlink:to=\"lab_srt_ProductOrServiceAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_ProductOrServiceAxis_2af067b2-bf4b-4cd7-b7e6-c9e08c210e8a_terseLabel_en-US\" xlink:label=\"lab_srt_ProductOrServiceAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Product and Service [Axis]</link:label>\n    <link:label id=\"lab_srt_ProductOrServiceAxis_label_en-US\" xlink:label=\"lab_srt_ProductOrServiceAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Product and Service [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ParkingandOtherMember\" xlink:href=\"bxp-20240630.xsd#bxp_ParkingandOtherMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ParkingandOtherMember\" xlink:to=\"lab_bxp_ParkingandOtherMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ParkingandOtherMember_768f2f53-6eaf-4756-946f-b10f5624a59a_terseLabel_en-US\" xlink:label=\"lab_bxp_ParkingandOtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Parking and Other [Member]</link:label>\n    <link:label id=\"lab_bxp_ParkingandOtherMember_label_en-US\" xlink:label=\"lab_bxp_ParkingandOtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Parking and Other [Member]</link:label>\n    <link:label id=\"lab_bxp_ParkingandOtherMember_documentation_en-US\" xlink:label=\"lab_bxp_ParkingandOtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Parking and Other [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\" xlink:to=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_6cbfecf9-3703-40af-ae9d-38d42d8e3e8a_terseLabel_en-US\" xlink:label=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Other revenue</link:label>\n    <link:label id=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_fbf7c019-36c2-45ed-9ec7-77072421b46c_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Other revenue</link:label>\n    <link:label id=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax_label_en-US\" xlink:label=\"lab_us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Revenue from Contract with Customer, Including Assessed Tax</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_UnconsolidatedJointVenturesMember\" xlink:href=\"bxp-20240630.xsd#bxp_UnconsolidatedJointVenturesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_UnconsolidatedJointVenturesMember\" xlink:to=\"lab_bxp_UnconsolidatedJointVenturesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_UnconsolidatedJointVenturesMember_6084f8f0-234f-4973-a25e-8f438803e73e_terseLabel_en-US\" xlink:label=\"lab_bxp_UnconsolidatedJointVenturesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Unconsolidated Joint Ventures [Member]</link:label>\n    <link:label id=\"lab_bxp_UnconsolidatedJointVenturesMember_label_en-US\" xlink:label=\"lab_bxp_UnconsolidatedJointVenturesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Unconsolidated Joint Ventures [Member]</link:label>\n    <link:label id=\"lab_bxp_UnconsolidatedJointVenturesMember_documentation_en-US\" xlink:label=\"lab_bxp_UnconsolidatedJointVenturesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Unconsolidated Joint Ventures [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems\" xlink:to=\"lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_5f79d64f-30ee-43b0-b9c8-5cff07d5557b_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</link:label>\n    <link:label id=\"lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems_label_en-US\" xlink:label=\"lab_us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SegmentDomain\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SegmentDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SegmentDomain\" xlink:to=\"lab_us-gaap_SegmentDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SegmentDomain_3680c1c5-11fb-48a8-9512-21a027ea439f_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SegmentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment [Domain]</link:label>\n    <link:label id=\"lab_us-gaap_SegmentDomain_label_en-US\" xlink:label=\"lab_us-gaap_SegmentDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Segments [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable\" xlink:to=\"lab_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_bd458cfa-9a3c-451a-a2ac-0c1dec06db0c_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]</link:label>\n    <link:label id=\"lab_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable_label_en-US\" xlink:label=\"lab_us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_IncomeStatementLocationAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_IncomeStatementLocationAxis\" xlink:to=\"lab_us-gaap_IncomeStatementLocationAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_IncomeStatementLocationAxis_4c1fce78-80ea-49b9-9a0e-51c9f83e9aa7_terseLabel_en-US\" xlink:label=\"lab_us-gaap_IncomeStatementLocationAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Income Statement Location [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_IncomeStatementLocationAxis_label_en-US\" xlink:label=\"lab_us-gaap_IncomeStatementLocationAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Statement of Income Location, Balance [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AssetImpairmentCharges\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetImpairmentCharges\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_AssetImpairmentCharges\" xlink:to=\"lab_us-gaap_AssetImpairmentCharges\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_AssetImpairmentCharges_458a11ec-761b-424e-bd87-27a7bfaa8d40_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_AssetImpairmentCharges\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Impairment loss</link:label>\n    <link:label id=\"lab_us-gaap_AssetImpairmentCharges_label_en-US\" xlink:label=\"lab_us-gaap_AssetImpairmentCharges\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Asset Impairment Charges</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\" xlink:to=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss_15d1318f-2ae6-487a-8569-ec8be2964047_terseLabel_en-US\" xlink:label=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Gain (Loss) from interest rate contracts</link:label>\n    <link:label id=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss_16512eda-7105-47f0-9c20-4a09f3cdfa57_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Gain (Loss) from interest rate contracts</link:label>\n    <link:label id=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss_label_en-US\" xlink:label=\"lab_us-gaap_DerivativeNetHedgeIneffectivenessGainLoss\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Derivative, Net Hedge Ineffectiveness Gain (Loss)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RealEstateOtherMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateOtherMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_RealEstateOtherMember\" xlink:to=\"lab_us-gaap_RealEstateOtherMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_RealEstateOtherMember_e9e03a29-c9d7-4168-bcd0-394d4335696a_terseLabel_en-US\" xlink:label=\"lab_us-gaap_RealEstateOtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Real Estate, Other [Member]</link:label>\n    <link:label id=\"lab_us-gaap_RealEstateOtherMember_label_en-US\" xlink:label=\"lab_us-gaap_RealEstateOtherMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Real Estate, Other [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_CompanysShareMember\" xlink:href=\"bxp-20240630.xsd#bxp_CompanysShareMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_CompanysShareMember\" xlink:to=\"lab_bxp_CompanysShareMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_CompanysShareMember_fe6bc45f-298f-4f93-8e93-59ff57aa098f_terseLabel_en-US\" xlink:label=\"lab_bxp_CompanysShareMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's Share [Member]</link:label>\n    <link:label id=\"lab_bxp_CompanysShareMember_label_en-US\" xlink:label=\"lab_bxp_CompanysShareMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's Share [Member]</link:label>\n    <link:label id=\"lab_bxp_CompanysShareMember_documentation_en-US\" xlink:label=\"lab_bxp_CompanysShareMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's Share [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_stpr_NY\" xlink:href=\"https://xbrl.sec.gov/stpr/2024/stpr-2024.xsd#stpr_NY\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_stpr_NY\" xlink:to=\"lab_stpr_NY\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_stpr_NY_128a7046-e616-4d51-8b95-6dbd2fddc506_terseLabel_en-US\" xlink:label=\"lab_stpr_NY\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">New York [Member]</link:label>\n    <link:label id=\"lab_stpr_NY_label_en-US\" xlink:label=\"lab_stpr_NY\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">NEW YORK</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\" xlink:href=\"https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\" xlink:to=\"lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_e96a1022-e3a0-48d6-b023-3f6e99a383a7_terseLabel_en-US\" xlink:label=\"lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Name of Property [Axis]</link:label>\n    <link:label id=\"lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_label_en-US\" xlink:label=\"lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Name of Property [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_BostonMember\" xlink:href=\"bxp-20240630.xsd#bxp_BostonMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_BostonMember\" xlink:to=\"lab_bxp_BostonMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_BostonMember_9adcd4cb-b49d-4edd-a74a-e273723038a7_terseLabel_en-US\" xlink:label=\"lab_bxp_BostonMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Boston [Member]</link:label>\n    <link:label id=\"lab_bxp_BostonMember_label_en-US\" xlink:label=\"lab_bxp_BostonMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Boston [Member]</link:label>\n    <link:label id=\"lab_bxp_BostonMember_documentation_en-US\" xlink:label=\"lab_bxp_BostonMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Boston [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis\" xlink:to=\"lab_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_c830bad4-137c-4f3a-afe0-27493a8351fe_terseLabel_en-US\" xlink:label=\"lab_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]</link:label>\n    <link:label id=\"lab_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis_label_en-US\" xlink:label=\"lab_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_IntersegmentEliminationMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IntersegmentEliminationMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_IntersegmentEliminationMember\" xlink:to=\"lab_us-gaap_IntersegmentEliminationMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_IntersegmentEliminationMember_dd49cc44-5833-4dd3-a0a5-aa83de4f6343_terseLabel_en-US\" xlink:label=\"lab_us-gaap_IntersegmentEliminationMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Business Intersegment, Eliminations [Member]</link:label>\n    <link:label id=\"lab_us-gaap_IntersegmentEliminationMember_label_en-US\" xlink:label=\"lab_us-gaap_IntersegmentEliminationMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Intersegment Eliminations [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_BasisDifferentialMember\" xlink:href=\"bxp-20240630.xsd#bxp_BasisDifferentialMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_BasisDifferentialMember\" xlink:to=\"lab_bxp_BasisDifferentialMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_BasisDifferentialMember_2eda4640-913d-4a52-84c1-d9b009266bf9_terseLabel_en-US\" xlink:label=\"lab_bxp_BasisDifferentialMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Basis Differential</link:label>\n    <link:label id=\"lab_bxp_BasisDifferentialMember_label_en-US\" xlink:label=\"lab_bxp_BasisDifferentialMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Basis Differential [Member]</link:label>\n    <link:label id=\"lab_bxp_BasisDifferentialMember_documentation_en-US\" xlink:label=\"lab_bxp_BasisDifferentialMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Basis Differential</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_SeattleMember\" xlink:href=\"bxp-20240630.xsd#bxp_SeattleMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_SeattleMember\" xlink:to=\"lab_bxp_SeattleMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_SeattleMember_065b1f46-3091-44c4-8134-c196a3b8e1c4_terseLabel_en-US\" xlink:label=\"lab_bxp_SeattleMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Seattle</link:label>\n    <link:label id=\"lab_bxp_SeattleMember_label_en-US\" xlink:label=\"lab_bxp_SeattleMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Seattle [Member]</link:label>\n    <link:label id=\"lab_bxp_SeattleMember_documentation_en-US\" xlink:label=\"lab_bxp_SeattleMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Seattle</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_MaterialReconcilingItemsMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MaterialReconcilingItemsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_MaterialReconcilingItemsMember\" xlink:to=\"lab_us-gaap_MaterialReconcilingItemsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_MaterialReconcilingItemsMember_dff54586-039a-4fb5-b288-494eba642d55_terseLabel_en-US\" xlink:label=\"lab_us-gaap_MaterialReconcilingItemsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment Reconciling Items</link:label>\n    <link:label id=\"lab_us-gaap_MaterialReconcilingItemsMember_label_en-US\" xlink:label=\"lab_us-gaap_MaterialReconcilingItemsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GrossProfit\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GrossProfit\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_GrossProfit\" xlink:to=\"lab_us-gaap_GrossProfit\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_GrossProfit_0c896618-fc31-467d-85b0-410dd31a7d83_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_GrossProfit\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Company's share of net operating income from joint ventures</link:label>\n    <link:label id=\"lab_us-gaap_GrossProfit_c2f77d17-7e58-4e7d-aa8c-d87fd44a4a37_totalLabel_en-US\" xlink:label=\"lab_us-gaap_GrossProfit\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Net Operating Income</link:label>\n    <link:label id=\"lab_us-gaap_GrossProfit_label_en-US\" xlink:label=\"lab_us-gaap_GrossProfit\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Gross Profit</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\" xlink:to=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_9c373365-7a22-45b9-b73f-98dde2884c1f_negatedLabel_en-US\" xlink:label=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\" xlink:role=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Noncontrolling interest - common units of the Operating Partnership</link:label>\n    <link:label id=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_46a68290-d934-471f-9e61-a1330664c07c_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Noncontrolling interest-common units of the Operating Partnership</link:label>\n    <link:label id=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_label_en-US\" xlink:label=\"lab_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Noncontrolling Interest in Net Income (Loss) Operating Partnerships, Redeemable</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:to=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_5a2a6cbb-0720-4951-a7d2-9d816ed8cc31_terseLabel_en-US\" xlink:label=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Losses from early extinguishment of debt</link:label>\n    <link:label id=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_282e52db-7c5e-4282-a610-3e1d44974352_negatedLabel_en-US\" xlink:label=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:role=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Losses from early extinguishment of debt</link:label>\n    <link:label id=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_d63681ef-083b-4c81-bf20-b8e73d4f2089_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Losses from early extinguishment of debt</link:label>\n    <link:label id=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt_label_en-US\" xlink:label=\"lab_us-gaap_GainsLossesOnExtinguishmentOfDebt\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Gain (Loss) on Extinguishment of Debt</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_GainLossOnDispositionOfAssets\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GainLossOnDispositionOfAssets\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_GainLossOnDispositionOfAssets\" xlink:to=\"lab_us-gaap_GainLossOnDispositionOfAssets\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_GainLossOnDispositionOfAssets_4afece1b-0fc5-4466-aec6-005fc5d2ab12_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_GainLossOnDispositionOfAssets\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Gains on sales of real estate</link:label>\n    <link:label id=\"lab_us-gaap_GainLossOnDispositionOfAssets_label_en-US\" xlink:label=\"lab_us-gaap_GainLossOnDispositionOfAssets\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\" xlink:to=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss_f21d3179-d44b-419a-aa4f-1f98b4ddcd3b_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Gain on sales-type lease</link:label>\n    <link:label id=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss_df8afc92-f688-498f-97e0-bfff3b84e7bc_negatedTerseLabel_en-US\" xlink:label=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\" xlink:role=\"http://www.xbrl.org/2009/role/negatedTerseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Gain on sales-type lease</link:label>\n    <link:label id=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss_label_en-US\" xlink:label=\"lab_us-gaap_SalesTypeAndDirectFinancingLeasesProfitLoss\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Sales-type and Direct Financing Leases, Profit (Loss)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LosAngelesMember\" xlink:href=\"bxp-20240630.xsd#bxp_LosAngelesMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_LosAngelesMember\" xlink:to=\"lab_bxp_LosAngelesMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_LosAngelesMember_80b62d98-79b3-4079-8f0f-5a896efccde8_terseLabel_en-US\" xlink:label=\"lab_bxp_LosAngelesMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Los Angeles [Member]</link:label>\n    <link:label id=\"lab_bxp_LosAngelesMember_label_en-US\" xlink:label=\"lab_bxp_LosAngelesMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Los Angeles [Member]</link:label>\n    <link:label id=\"lab_bxp_LosAngelesMember_documentation_en-US\" xlink:label=\"lab_bxp_LosAngelesMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlin\n\n##Instance document\n<?xml version='1.0' encoding='UTF-8'?>\n<xbrl xmlns=\"http://www.xbrl.org/2003/instance\" xmlns:bxp=\"http://www.bxp.com/20240630\" xmlns:dei=\"http://xbrl.sec.gov/dei/2024\" xmlns:ecd=\"http://xbrl.sec.gov/ecd/2024\" xmlns:iso4217=\"http://www.xbrl.org/2003/iso4217\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:srt=\"http://fasb.org/srt/2024\" xmlns:stpr=\"http://xbrl.sec.gov/stpr/2024\" xmlns:us-gaap=\"http://fasb.org/us-gaap/2024\" xmlns:utr=\"http://www.xbrl.org/2009/utr\" xmlns:xbrldi=\"http://xbrl.org/2006/xbrldi\" xmlns:xhtml=\"http://www.w3.org/1999/xhtml\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xml:lang=\"en-US\"><link:schemaRef xlink:href=\"bxp-20240630.xsd\" xlink:type=\"simple\"/>\n\t<context id=\"c-448\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-04-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-449\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-450\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-01-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-451\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-01-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-462\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">bxp:BostonPropertiesLimitedPartnershipMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-04-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-463\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">bxp:BostonPropertiesLimitedPartnershipMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-464\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:ConsolidationItemsAxis\">us-gaap:MaterialReconcilingItemsMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">bxp:BostonPropertiesLimitedPartnershipMember</xbrldi:explicitMember>\n         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         <segment>\n                <xbrldi:explicitMember dimension=\"srt:OwnershipAxis\">bxp:CompanysShareMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">bxp:SanFranciscoMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-04-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-502\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:OwnershipAxis\">bxp:CompanysShareMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">bxp:SeattleMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-04-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-503\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:OwnershipAxis\">bxp:CompanysShareMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">stpr:DC</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-04-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-504\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:OwnershipAxis\">bxp:CompanysShareMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-04-01</startDate>\n            <endDate>2024-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-505\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">bxp:BostonMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-506\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">bxp:LosAngelesMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-507\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:StatementGeographicalAxis\">stpr:NY</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2023-04-01</startDate>\n            <endDate>2023-06-30</endDate>\n        </period>\n    </context>\n\t<context id=\"c-508\">\n        <entity>\n   \n\n##US GAAP Taxonomy\nNone\n\nQuestion: What erroneous relationship type exists between StatementBusinessSegmentsAxis and IntersegmentEliminationMember, based on the provided XBRL filing and the US GAAP taxonomy?\nAnswer:\n\n    "

Answer: "CombinationErr"