"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/StockOptionandIncentivePlanStockandUnitsNarrativeDetails\" xlink:type=\"simple\" xlink:href=\"bxp-20240331.xsd#StockOptionandIncentivePlanStockandUnitsNarrativeDetails\"/>\n  <link:presentationLink xlink:role=\"http://www.bxp.com/role/StockOptionandIncentivePlanStockandUnitsNarrativeDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_c47d6b40-29c3-4b33-aab1-129f40f2a4bb\" 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xlink:label=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_1a3fa8fd-7461-4cf2-827b-d9b94147eea0\" xlink:href=\"bxp-20240331.xsd#bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eca2e110-8b02-4d5e-b51e-d5df6ea9894a\" xlink:to=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_1a3fa8fd-7461-4cf2-827b-d9b94147eea0\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:href=\"bxp-20240331.xsd#bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_1a3fa8fd-7461-4cf2-827b-d9b94147eea0\" xlink:to=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RestrictedStockMember_8554adf9-2c22-4b00-9602-9949eb167483\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:to=\"loc_us-gaap_RestrictedStockMember_8554adf9-2c22-4b00-9602-9949eb167483\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LTIPUnitsMember_820d53f8-3924-48ef-a177-1cf08ef67fc8\" xlink:href=\"bxp-20240331.xsd#bxp_LTIPUnitsMember\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:to=\"loc_bxp_LTIPUnitsMember_820d53f8-3924-48ef-a177-1cf08ef67fc8\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_UnvestedRestrictedstockandLTIPUnitsMember_964ce24a-697c-48d0-a6f3-a674d53d0783\" xlink:href=\"bxp-20240331.xsd#bxp_UnvestedRestrictedstockandLTIPUnitsMember\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:to=\"loc_bxp_UnvestedRestrictedstockandLTIPUnitsMember_964ce24a-697c-48d0-a6f3-a674d53d0783\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LtipsincludingvestedMYLTIPSAndRestrictedStockMember_6de39859-b842-4e20-bbe4-09690ddc9006\" xlink:href=\"bxp-20240331.xsd#bxp_LtipsincludingvestedMYLTIPSAndRestrictedStockMember\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:to=\"loc_bxp_LtipsincludingvestedMYLTIPSAndRestrictedStockMember_6de39859-b842-4e20-bbe4-09690ddc9006\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_UnvestedMYLTIPUnitsMember_47fa605d-5f04-4965-846d-04ecbfa3a1bc\" xlink:href=\"bxp-20240331.xsd#bxp_UnvestedMYLTIPUnitsMember\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:to=\"loc_bxp_UnvestedMYLTIPUnitsMember_47fa605d-5f04-4965-846d-04ecbfa3a1bc\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LTIPand2014MYLTIPUnitsMember_827b9cf7-450e-4277-b446-793f3538d115\" xlink:href=\"bxp-20240331.xsd#bxp_LTIPand2014MYLTIPUnitsMember\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_496cec66-5a37-47f1-90c0-a09d38210933\" xlink:to=\"loc_bxp_LTIPand2014MYLTIPUnitsMember_827b9cf7-450e-4277-b446-793f3538d115\" xlink:type=\"arc\" 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xlink:from=\"loc_dei_LegalEntityAxis_96c17b51-2fc2-4f88-93df-04afcc2c3987\" xlink:to=\"loc_dei_EntityDomain_2960cf23-a2dd-4e7d-8626-63dd7f7580e3\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_BostonPropertiesLimitedPartnershipMember_06b6af80-ac9b-45d2-8d04-5b096a9bb511\" xlink:href=\"bxp-20240331.xsd#bxp_BostonPropertiesLimitedPartnershipMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_dei_EntityDomain_2960cf23-a2dd-4e7d-8626-63dd7f7580e3\" xlink:to=\"loc_bxp_BostonPropertiesLimitedPartnershipMember_06b6af80-ac9b-45d2-8d04-5b096a9bb511\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AwardTypeAxis_91d28985-f400-4542-8722-6c3d5851190d\" 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xlink:from=\"loc_us-gaap_AwardTypeAxis_91d28985-f400-4542-8722-6c3d5851190d\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3b4997cc-1ed0-42a3-b8a6-0f231c470dec\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RestrictedStockMember_91609f58-8f40-4829-b458-e6c6953c4428\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockMember\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3b4997cc-1ed0-42a3-b8a6-0f231c470dec\" xlink:to=\"loc_us-gaap_RestrictedStockMember_91609f58-8f40-4829-b458-e6c6953c4428\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" 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xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3b4997cc-1ed0-42a3-b8a6-0f231c470dec\" xlink:to=\"loc_bxp_UnvestedRestrictedstockandLTIPUnitsMember_2da9b484-63a6-4756-9182-7a7d194f4ffb\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RangeAxis_42458bb3-c036-4337-bbc0-0b5801af636f\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eca2e110-8b02-4d5e-b51e-d5df6ea9894a\" xlink:to=\"loc_srt_RangeAxis_42458bb3-c036-4337-bbc0-0b5801af636f\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" 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xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eca2e110-8b02-4d5e-b51e-d5df6ea9894a\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_Finalawardspercentageoftarget_0b5bd7f2-4688-47d4-a0f6-36fc6f4897c3\" xlink:href=\"bxp-20240331.xsd#bxp_Finalawardspercentageoftarget\"/>\n    <link:presentationArc order=\"1\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_Finalawardspercentageoftarget_0b5bd7f2-4688-47d4-a0f6-36fc6f4897c3\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ValueOfMyltipAwards_7072600e-b6b4-48ea-bb62-3849bc215d41\" xlink:href=\"bxp-20240331.xsd#bxp_ValueOfMyltipAwards\"/>\n    <link:presentationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_ValueOfMyltipAwards_7072600e-b6b4-48ea-bb62-3849bc215d41\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_bc9bf03e-0ef6-4470-ad07-cf33b9af8f24\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures\"/>\n    <link:presentationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_bc9bf03e-0ef6-4470-ad07-cf33b9af8f24\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommonStockSharesIssued_4448cec1-ebeb-4d8c-b7cd-9e9dc0f22fa1\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesIssued\"/>\n    <link:presentationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_CommonStockSharesIssued_4448cec1-ebeb-4d8c-b7cd-9e9dc0f22fa1\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/verboseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_3bda7766-f766-4f25-9b74-cb38959c76e9\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\"/>\n    <link:presentationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_3bda7766-f766-4f25-9b74-cb38959c76e9\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_f0ee5005-105c-4fa3-b446-84ebdfd7f042\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\"/>\n    <link:presentationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_f0ee5005-105c-4fa3-b446-84ebdfd7f042\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_EmployeeAndDirectorPaymentPerShare_f4a01d86-8043-4084-a6b2-7b7e3b411fc6\" xlink:href=\"bxp-20240331.xsd#bxp_EmployeeAndDirectorPaymentPerShare\"/>\n    <link:presentationArc order=\"7\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_EmployeeAndDirectorPaymentPerShare_f4a01d86-8043-4084-a6b2-7b7e3b411fc6\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ValueOfLtipUnitsIssued_9a34946a-f500-4287-938b-f14274fd0bb0\" xlink:href=\"bxp-20240331.xsd#bxp_ValueOfLtipUnitsIssued\"/>\n    <link:presentationArc order=\"8\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_ValueOfLtipUnitsIssued_9a34946a-f500-4287-938b-f14274fd0bb0\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AllocatedShareBasedCompensationExpense_705bbbf0-d48c-47d4-aa86-17edc7b0bafe\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense\"/>\n    <link:presentationArc order=\"9\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_AllocatedShareBasedCompensationExpense_705bbbf0-d48c-47d4-aa86-17edc7b0bafe\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_b956269e-0fcd-447f-9251-af49d6ecae2a\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized\"/>\n    <link:presentationArc order=\"10\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_b956269e-0fcd-447f-9251-af49d6ecae2a\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_179531cc-0497-4833-9024-6e7428394478\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1\"/>\n    <link:presentationArc order=\"11\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_179531cc-0497-4833-9024-6e7428394478\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommonStockValue_7e6e510d-5b2b-44f4-9da0-24b58515e133\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValue\"/>\n    <link:presentationArc order=\"12\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_CommonStockValue_7e6e510d-5b2b-44f4-9da0-24b58515e133\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/verboseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_CommonStockWeightedAveragePrice_ce3a92fe-8b5c-4c0e-acb5-94cdd19268bc\" xlink:href=\"bxp-20240331.xsd#bxp_CommonStockWeightedAveragePrice\"/>\n    <link:presentationArc order=\"13\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_CommonStockWeightedAveragePrice_ce3a92fe-8b5c-4c0e-acb5-94cdd19268bc\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue_5aec0d73-e89f-4492-8596-6f9475305c90\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue\"/>\n    <link:presentationArc order=\"14\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue_5aec0d73-e89f-4492-8596-6f9475305c90\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_2ddbeeba-1d9d-4b01-bd81-767549e0d70f\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\"/>\n    <link:presentationArc order=\"15\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_2ddbeeba-1d9d-4b01-bd81-767549e0d70f\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_b9b76ee6-65b5-4e7e-a9a2-0f68564445bd\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\"/>\n    <link:presentationArc order=\"16\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_b9b76ee6-65b5-4e7e-a9a2-0f68564445bd\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_0acea0bd-59ef-46e1-9c29-ce0e062a3cb6\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate\"/>\n    <link:presentationArc order=\"17\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_0acea0bd-59ef-46e1-9c29-ce0e062a3cb6\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_6a2b2eb6-984d-4852-8dd1-2500b62da669\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\"/>\n    <link:presentationArc order=\"18\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_6a2b2eb6-984d-4852-8dd1-2500b62da669\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_NumberOfBusinessDaysAverageClosingPrice_751c184a-174c-45bc-8f9f-7f56ebdf988b\" xlink:href=\"bxp-20240331.xsd#bxp_NumberOfBusinessDaysAverageClosingPrice\"/>\n    <link:presentationArc order=\"19\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_NumberOfBusinessDaysAverageClosingPrice_751c184a-174c-45bc-8f9f-7f56ebdf988b\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_4665d9c2-a70a-4b5a-90ca-b55912511d1f\" xlink:href=\"bxp-20240331.xsd#bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\"/>\n    <link:presentationArc order=\"20\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_4665d9c2-a70a-4b5a-90ca-b55912511d1f\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_19da8e2a-a593-44ff-8f40-f88e42ca4451\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\"/>\n    <link:presentationArc order=\"21\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_19da8e2a-a593-44ff-8f40-f88e42ca4451\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_45da55c5-9726-4410-b707-40df7a8be2e6\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\"/>\n    <link:presentationArc order=\"22\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_45da55c5-9726-4410-b707-40df7a8be2e6\" xlink:type=\"arc\" preferredLabel=\"http://www.xbrl.org/2003/role/terseLabel\"/>\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\"/>\n\n\n##Definition 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\" xmlns:xbrldt=\"http://xbrl.org/2005/xbrldt\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/all\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#all\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-default\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-domain\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain\"/>\n  <link:arcroleRef arcroleURI=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member\"/>\n  <link:roleRef roleURI=\"http://www.bxp.com/role/StockOptionandIncentivePlanStockandUnitsNarrativeDetails\" xlink:type=\"simple\" xlink:href=\"bxp-20240331.xsd#StockOptionandIncentivePlanStockandUnitsNarrativeDetails\"/>\n  <link:definitionLink xlink:role=\"http://www.bxp.com/role/StockOptionandIncentivePlanStockandUnitsNarrativeDetails\" xlink:type=\"extended\">\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eca2e110-8b02-4d5e-b51e-d5df6ea9894a\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/all\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eca2e110-8b02-4d5e-b51e-d5df6ea9894a\" xlink:type=\"arc\" order=\"1\" xbrldt:closed=\"true\" xbrldt:contextElement=\"segment\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_1a3fa8fd-7461-4cf2-827b-d9b94147eea0\" xlink:href=\"bxp-20240331.xsd#bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\"/>\n    <link:definitionArc 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xlink:to=\"loc_bxp_Finalawardspercentageoftarget_0b5bd7f2-4688-47d4-a0f6-36fc6f4897c3\" xlink:type=\"arc\" order=\"0\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ValueOfMyltipAwards_7072600e-b6b4-48ea-bb62-3849bc215d41\" xlink:href=\"bxp-20240331.xsd#bxp_ValueOfMyltipAwards\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_ValueOfMyltipAwards_7072600e-b6b4-48ea-bb62-3849bc215d41\" xlink:type=\"arc\" order=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures_bc9bf03e-0ef6-4470-ad07-cf33b9af8f24\" 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xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_CommonStockSharesIssued_4448cec1-ebeb-4d8c-b7cd-9e9dc0f22fa1\" xlink:type=\"arc\" order=\"3\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_3bda7766-f766-4f25-9b74-cb38959c76e9\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_3bda7766-f766-4f25-9b74-cb38959c76e9\" xlink:type=\"arc\" order=\"4\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_f0ee5005-105c-4fa3-b446-84ebdfd7f042\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_f0ee5005-105c-4fa3-b446-84ebdfd7f042\" xlink:type=\"arc\" order=\"5\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_EmployeeAndDirectorPaymentPerShare_f4a01d86-8043-4084-a6b2-7b7e3b411fc6\" xlink:href=\"bxp-20240331.xsd#bxp_EmployeeAndDirectorPaymentPerShare\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_EmployeeAndDirectorPaymentPerShare_f4a01d86-8043-4084-a6b2-7b7e3b411fc6\" xlink:type=\"arc\" order=\"6\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ValueOfLtipUnitsIssued_9a34946a-f500-4287-938b-f14274fd0bb0\" xlink:href=\"bxp-20240331.xsd#bxp_ValueOfLtipUnitsIssued\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_ValueOfLtipUnitsIssued_9a34946a-f500-4287-938b-f14274fd0bb0\" xlink:type=\"arc\" order=\"7\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AllocatedShareBasedCompensationExpense_705bbbf0-d48c-47d4-aa86-17edc7b0bafe\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_AllocatedShareBasedCompensationExpense_705bbbf0-d48c-47d4-aa86-17edc7b0bafe\" xlink:type=\"arc\" order=\"8\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_b956269e-0fcd-447f-9251-af49d6ecae2a\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_b956269e-0fcd-447f-9251-af49d6ecae2a\" xlink:type=\"arc\" order=\"9\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_179531cc-0497-4833-9024-6e7428394478\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_179531cc-0497-4833-9024-6e7428394478\" xlink:type=\"arc\" order=\"10\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommonStockValue_7e6e510d-5b2b-44f4-9da0-24b58515e133\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockValue\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_CommonStockValue_7e6e510d-5b2b-44f4-9da0-24b58515e133\" xlink:type=\"arc\" order=\"11\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_CommonStockWeightedAveragePrice_ce3a92fe-8b5c-4c0e-acb5-94cdd19268bc\" xlink:href=\"bxp-20240331.xsd#bxp_CommonStockWeightedAveragePrice\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_CommonStockWeightedAveragePrice_ce3a92fe-8b5c-4c0e-acb5-94cdd19268bc\" xlink:type=\"arc\" order=\"12\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue_5aec0d73-e89f-4492-8596-6f9475305c90\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue_5aec0d73-e89f-4492-8596-6f9475305c90\" xlink:type=\"arc\" order=\"13\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_2ddbeeba-1d9d-4b01-bd81-767549e0d70f\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_2ddbeeba-1d9d-4b01-bd81-767549e0d70f\" xlink:type=\"arc\" order=\"14\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_b9b76ee6-65b5-4e7e-a9a2-0f68564445bd\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_b9b76ee6-65b5-4e7e-a9a2-0f68564445bd\" xlink:type=\"arc\" order=\"15\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_0acea0bd-59ef-46e1-9c29-ce0e062a3cb6\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_0acea0bd-59ef-46e1-9c29-ce0e062a3cb6\" xlink:type=\"arc\" order=\"16\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_6a2b2eb6-984d-4852-8dd1-2500b62da669\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_6a2b2eb6-984d-4852-8dd1-2500b62da669\" xlink:type=\"arc\" order=\"17\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_NumberOfBusinessDaysAverageClosingPrice_751c184a-174c-45bc-8f9f-7f56ebdf988b\" xlink:href=\"bxp-20240331.xsd#bxp_NumberOfBusinessDaysAverageClosingPrice\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_NumberOfBusinessDaysAverageClosingPrice_751c184a-174c-45bc-8f9f-7f56ebdf988b\" xlink:type=\"arc\" order=\"18\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_4665d9c2-a70a-4b5a-90ca-b55912511d1f\" xlink:href=\"bxp-20240331.xsd#bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_4665d9c2-a70a-4b5a-90ca-b55912511d1f\" xlink:type=\"arc\" order=\"19\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_19da8e2a-a593-44ff-8f40-f88e42ca4451\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_19da8e2a-a593-44ff-8f40-f88e42ca4451\" xlink:type=\"arc\" order=\"20\"/>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_45da55c5-9726-4410-b707-40df7a8be2e6\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\"/>\n    <link:definitionArc xlink:arcrole=\"http://xbrl.org/int/dim/arcrole/domain-member\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_7d4bdf4d-00db-48ed-846c-f514fee92e48\" xlink:to=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_45da55c5-9726-4410-b707-40df7a8be2e6\" xlink:type=\"arc\" order=\"21\"/>\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_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_375a77b9-baae-4d36-b9ee-215213d20b83_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Award Type [Domain]</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Award Type [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_MYLTIPTwoThousandTwentyFourMember\" xlink:href=\"bxp-20240331.xsd#bxp_MYLTIPTwoThousandTwentyFourMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_MYLTIPTwoThousandTwentyFourMember\" xlink:to=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember_24493011-2cae-4d66-ae82-aa3c97c2bb1c_terseLabel_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP 2024</link:label>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember_label_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP Two Thousand Twenty Four [Member]</link:label>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember_documentation_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyFourMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP Two Thousand Twenty Four</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LTIPand2014MYLTIPUnitsMember\" xlink:href=\"bxp-20240331.xsd#bxp_LTIPand2014MYLTIPUnitsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_LTIPand2014MYLTIPUnitsMember\" xlink:to=\"lab_bxp_LTIPand2014MYLTIPUnitsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_LTIPand2014MYLTIPUnitsMember_b4a9e253-8315-4fa3-9a7b-4554a7cff7ab_terseLabel_en-US\" xlink:label=\"lab_bxp_LTIPand2014MYLTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">LTIP and MYLTIP Units [Member]</link:label>\n    <link:label id=\"lab_bxp_LTIPand2014MYLTIPUnitsMember_label_en-US\" xlink:label=\"lab_bxp_LTIPand2014MYLTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">LTIP and 2014 MYLTIP Units [Member]</link:label>\n    <link:label id=\"lab_bxp_LTIPand2014MYLTIPUnitsMember_documentation_en-US\" xlink:label=\"lab_bxp_LTIPand2014MYLTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">LTIP and 2014 MYLTIP Units [Member].</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_49f033e7-2736-4a5a-ab76-d4910f25645a_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Risk-free rate</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\" xlink:href=\"bxp-20240331.xsd#bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\" xlink:to=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_5f895bf9-1cc0-422f-8d00-02e3f51f02dc_terseLabel_en-US\" xlink:label=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Option And Incentive Plan And Stock Repurchase Plan [Domain]</link:label>\n    <link:label id=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_label_en-US\" xlink:label=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Option And Incentive Plan And Stock Repurchase Plan [Domain]</link:label>\n    <link:label id=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain_documentation_en-US\" xlink:label=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanDomain\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Option And Incentive Plan And Stock Repurchase Plan [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_UnvestedRestrictedstockandLTIPUnitsMember\" xlink:href=\"bxp-20240331.xsd#bxp_UnvestedRestrictedstockandLTIPUnitsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_UnvestedRestrictedstockandLTIPUnitsMember\" xlink:to=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember_242586d9-16ed-4ffe-974b-2c2bb5632c40_terseLabel_en-US\" xlink:label=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Unvested Restricted stock and LTIP Units [Member]</link:label>\n    <link:label id=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember_label_en-US\" xlink:label=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Unvested Restricted stock and LTIP Units [Member]</link:label>\n    <link:label id=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember_documentation_en-US\" xlink:label=\"lab_bxp_UnvestedRestrictedstockandLTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Unvested Restricted stock and LTIP Units [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_MYLTIPTwoThousandTwentyOneMember\" xlink:href=\"bxp-20240331.xsd#bxp_MYLTIPTwoThousandTwentyOneMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_MYLTIPTwoThousandTwentyOneMember\" xlink:to=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember_a4760e94-980d-42b7-9d9b-97080b28a45f_terseLabel_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP 2021</link:label>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember_label_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP Two Thousand Twenty One [Member]</link:label>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember_documentation_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyOneMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIPS Two Thousand Twenty One</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_AllocatedShareBasedCompensationExpense\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_AllocatedShareBasedCompensationExpense\" xlink:to=\"lab_us-gaap_AllocatedShareBasedCompensationExpense\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_AllocatedShareBasedCompensationExpense_a52bca68-0ae8-47fe-b138-b8c4c27aeb21_terseLabel_en-US\" xlink:label=\"lab_us-gaap_AllocatedShareBasedCompensationExpense\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock based compensation expense</link:label>\n    <link:label id=\"lab_us-gaap_AllocatedShareBasedCompensationExpense_label_en-US\" xlink:label=\"lab_us-gaap_AllocatedShareBasedCompensationExpense\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Payment Arrangement, Expense</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_ea839423-c426-4bb9-9236-d749c5e61e51_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Noncontrolling Interest, Outstanding</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_8e4cc04b-5c0d-40f1-b107-781f620aed26_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Number of shares issued</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_2faf7869-d630-437f-8887-04a9897e0495_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-based Compensation Arrangement by Share-based Payment Award, Terms of Award</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Terms of Award</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_5b4600fa-8411-42c9-9e70-7956dfa02f38_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Weighted Average Price of Shares Purchased</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Per Share Weighted Average Price of Shares Purchased</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_3de57054-a8f1-4e96-b5a9-c43557bdf162_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Common stock available for issuance</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\" xlink:href=\"bxp-20240331.xsd#bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\" xlink:to=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_e9e547be-d138-47e6-b798-2915589267fb_terseLabel_en-US\" xlink:label=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Option And Incentive Plan And Stock Repurchase Plan [Axis]</link:label>\n    <link:label id=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_label_en-US\" xlink:label=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Option And Incentive Plan And Stock Repurchase Plan [Axis]</link:label>\n    <link:label id=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis_documentation_en-US\" xlink:label=\"lab_bxp_StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Stock Option And Incentive Plan And Stock Repurchase Plan [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_srt_RangeAxis\" xlink:href=\"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_srt_RangeAxis\" xlink:to=\"lab_srt_RangeAxis\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_srt_RangeAxis_af8aa546-e0a4-44af-9f1d-3a4d32c86677_terseLabel_en-US\" xlink:label=\"lab_srt_RangeAxis\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Range [Axis]</link:label>\n    <link:label id=\"lab_srt_RangeAxis_label_en-US\" xlink:label=\"lab_srt_RangeAxis\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Statistical Measurement [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_A2012OPPAnd20132021MYLTIPMember\" xlink:href=\"bxp-20240331.xsd#bxp_A2012OPPAnd20132021MYLTIPMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_A2012OPPAnd20132021MYLTIPMember\" xlink:to=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember_6ed2f39c-9e77-40a1-99b2-3ea5f5277d8d_terseLabel_en-US\" xlink:label=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">2012 OPP and 2013-2021 MYLTIP [Member]</link:label>\n    <link:label id=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember_label_en-US\" xlink:label=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">2012 OPP and 2013-2021 MYLTIP [Member]</link:label>\n    <link:label id=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember_documentation_en-US\" xlink:label=\"lab_bxp_A2012OPPAnd20132021MYLTIPMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">2012 OPP and 2013-2021 MYLTIP</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\" xlink:href=\"bxp-20240331.xsd#bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\" xlink:to=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_af3cea03-083f-45a7-b760-272e7934e1dd_terseLabel_en-US\" xlink:label=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Annual Installments for Vesting</link:label>\n    <link:label id=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_label_en-US\" xlink:label=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Annual Installments for Vesting</link:label>\n    <link:label id=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting_documentation_en-US\" xlink:label=\"lab_bxp_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Annual Installments for Vesting</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_LTIPUnitsMember\" xlink:href=\"bxp-20240331.xsd#bxp_LTIPUnitsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_LTIPUnitsMember\" xlink:to=\"lab_bxp_LTIPUnitsMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_LTIPUnitsMember_f14fce3e-bc89-4b59-a8ac-f6b9e546a8a9_terseLabel_en-US\" xlink:label=\"lab_bxp_LTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">LTIP Units [Member]</link:label>\n    <link:label id=\"lab_bxp_LTIPUnitsMember_label_en-US\" xlink:label=\"lab_bxp_LTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">LTIP Units [Member]</link:label>\n    <link:label id=\"lab_bxp_LTIPUnitsMember_documentation_en-US\" xlink:label=\"lab_bxp_LTIPUnitsMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">LTIP Units [Member].</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\" xlink:to=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_13692292-b2de-41a4-8a4c-4313334a7747_terseLabel_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>\n    <link:label id=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_label_en-US\" xlink:label=\"lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_dei_EntityDomain\" xlink:href=\"https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_dei_EntityDomain\" xlink:to=\"lab_dei_EntityDomain\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_dei_EntityDomain_ce480875-101b-4d0e-81ba-5b25c469f7b9_terseLabel_en-US\" xlink:label=\"lab_dei_EntityDomain\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Entity [Domain]</link:label>\n    <link:label id=\"lab_dei_EntityDomain_label_en-US\" xlink:label=\"lab_dei_EntityDomain\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Entity [Domain]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_RestrictedStockMember\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedStockMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_RestrictedStockMember\" xlink:to=\"lab_us-gaap_RestrictedStockMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_RestrictedStockMember_bc314120-5b1b-46ca-8e9b-5e2d9bcacc5f_terseLabel_en-US\" xlink:label=\"lab_us-gaap_RestrictedStockMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Restricted Stock [Member]</link:label>\n    <link:label id=\"lab_us-gaap_RestrictedStockMember_label_en-US\" xlink:label=\"lab_us-gaap_RestrictedStockMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Restricted Stock [Member]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\" xlink:to=\"lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_f126617b-fb92-4f35-b38c-2e578674ef25_terseLabel_en-US\" xlink:label=\"lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">Expected life assumed to calculate per unit fair value per LTIP unit (in years)</link:label>\n    <link:label id=\"lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_label_en-US\" xlink:label=\"lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_bxp_MYLTIPTwoThousandTwentyTwoMember\" xlink:href=\"bxp-20240331.xsd#bxp_MYLTIPTwoThousandTwentyTwoMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_bxp_MYLTIPTwoThousandTwentyTwoMember\" xlink:to=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember\" xlink:type=\"arc\" order=\"1\"/>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember_0da2168f-f765-45ce-aa93-3f93d662ddf5_terseLabel_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP 2022</link:label>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember_label_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP Two Thousand Twenty Two [Member]</link:label>\n    <link:label id=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember_documentation_en-US\" xlink:label=\"lab_bxp_MYLTIPTwoThousandTwentyTwoMember\" xlink:role=\"http://www.xbrl.org/2003/role/documentation\" xlink:type=\"resource\" xml:lang=\"en-US\">MYLTIP Two Thousand Twenty Two</link:label>\n    <link:loc xlink:type=\"locator\" xlink:label=\"loc_us-gaap_CommonStockSharesIssued\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesIssued\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"loc_us-gaap_CommonStockShare\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/20240331\" xmlns:dei=\"http://xbrl.sec.gov/dei/2023\" xmlns:ecd=\"http://xbrl.sec.gov/ecd/2023\" xmlns:iso4217=\"http://www.xbrl.org/2003/iso4217\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:srt=\"http://fasb.org/srt/2023\" xmlns:stpr=\"http://xbrl.sec.gov/stpr/2023\" xmlns:us-gaap=\"http://fasb.org/us-gaap/2023\" 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-20240331.xsd\" xlink:type=\"simple\"/>\n\t<context id=\"c-318\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">bxp:MYLTIPTwoThousandTwentyOneMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-02-01</startDate>\n            <endDate>2024-02-01</endDate>\n        </period>\n    </context>\n\t<context id=\"c-319\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">bxp:MYLTIPTwoThousandTwentyOneMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-02-01</instant>\n        </period>\n    </context>\n\t<context id=\"c-425\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">bxp:MYLTIPTwoThousandTwentyFourMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-01-25</instant>\n        </period>\n    </context>\n\t<context id=\"c-8\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n        </entity>\n        <period>\n            <instant>2024-03-31</instant>\n        </period>\n    </context>\n\t<context id=\"c-9\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n        </entity>\n        <period>\n            <instant>2023-12-31</instant>\n        </period>\n    </context>\n\t<context id=\"c-426\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">us-gaap:RestrictedStockMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-03-31</instant>\n        </period>\n    </context>\n\t<context id=\"c-427\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">bxp:LTIPUnitsMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember 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  </segment>\n        </entity>\n        <period>\n            <startDate>2024-01-01</startDate>\n            <endDate>2024-03-31</endDate>\n        </period>\n    </context>\n\t<context id=\"c-429\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"bxp:StockOptionAndIncentivePlanAndStockRepurchasePlanAxis\">bxp:LTIPand2014MYLTIPUnitsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <startDate>2024-01-01</startDate>\n            <endDate>2024-03-31</endDate>\n        </period>\n    </context>\n\t<context id=\"c-432\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">bxp:LTIPUnitsMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n       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dimension=\"us-gaap:AwardTypeAxis\">bxp:MYLTIPTwoThousandTwentyFourMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">bxp:BostonPropertiesLimitedPartnershipMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-01-25</instant>\n        </period>\n    </context>\n\t<context id=\"c-424\">\n        <entity>\n            <identifier scheme=\"http://www.sec.gov/CIK\">0001037540</identifier>\n            <segment>\n                <xbrldi:explicitMember dimension=\"srt:RangeAxis\">bxp:TargetMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"us-gaap:AwardTypeAxis\">bxp:MYLTIPTwoThousandTwentyFourMember</xbrldi:explicitMember>\n                <xbrldi:explicitMember dimension=\"dei:LegalEntityAxis\">bxp:BostonPropertiesLimitedPartnershipMember</xbrldi:explicitMember>\n            </segment>\n        </entity>\n        <period>\n            <instant>2024-01-25</instant>\n        </period>\n    </context>\n\t<unit id=\"number\">\n        <measure>pure</measure>\n    </unit>\n\t<unit id=\"real_estate_properties\">\n        <measure>bxp:Real_Estate_Properties</measure>\n    </unit>\n\t<unit id=\"shares\">\n        <measure>shares</measure>\n    </unit>\n\t<unit id=\"usdPerShare\">\n        <divide>\n            <unitNumerator>\n                <measure>iso4217:USD</measure>\n            </unitNumerator>\n            <unitDenominator>\n                <measure>shares</measure>\n            </unitDenominator>\n        </divide>\n    </unit>\n\t<unit id=\"usd\">\n        <measure>iso4217:USD</measure>\n    </unit>\n\t<unit id=\"y\">\n        <measure>utr:Y</measure>\n    </unit>\n\t<unit id=\"sqft\">\n        <measure>utr:sqft</measure>\n    </unit>\n\t<unit id=\"apartments\">\n        <measure>bxp:apartments</measure>\n    </unit>\n\t<bxp:Finalawardspercentageoftarget contextRef=\"c-318\" decimals=\"2\" id=\"f-1444\" unitRef=\"number\">1.12</bxp:Finalawardspercentageoftarget>\n\t<bxp:Finalawardspercentageoftarget contextRef=\"c-318\" decimals=\"2\" id=\"f-1833\" unitRef=\"number\">1.12</bxp:Finalawardspercentageoftarget>\n\t<bxp:ValueOfMyltipAwards contextRef=\"c-319\" decimals=\"-3\" id=\"f-1445\" unitRef=\"usd\">12600000</bxp:ValueOfMyltipAwards>\n\t<bxp:ValueOfMyltipAwards contextRef=\"c-425\" decimals=\"-3\" id=\"f-1832\" unitRef=\"usd\">11100000</bxp:ValueOfMyltipAwards>\n\t<bxp:ValueOfMyltipAwards contextRef=\"c-319\" decimals=\"-3\" id=\"f-1834\" unitRef=\"usd\">12600000</bxp:ValueOfMyltipAwards>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures contextRef=\"c-318\" decimals=\"0\" id=\"f-1446\" unitRef=\"shares\">155625</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures contextRef=\"c-318\" decimals=\"0\" id=\"f-1835\" unitRef=\"shares\">155625</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures>\n\t<us-gaap:CommonStockSharesIssued contextRef=\"c-8\" decimals=\"0\" id=\"f-165\" unitRef=\"shares\">157128071</us-gaap:CommonStockSharesIssued>\n\t<us-gaap:CommonStockSharesIssued contextRef=\"c-9\" decimals=\"0\" id=\"f-166\" unitRef=\"shares\">157019766</us-gaap:CommonStockSharesIssued>\n\t<us-gaap:CommonStockSharesIssued contextRef=\"c-426\" decimals=\"INF\" id=\"f-1836\" unitRef=\"shares\">76228</us-gaap:CommonStockSharesIssued>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod contextRef=\"c-427\" decimals=\"INF\" id=\"f-1837\" unitRef=\"shares\">431123</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-308\" decimals=\"0\" id=\"f-1434\" unitRef=\"shares\">16492171</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-309\" decimals=\"0\" id=\"f-1435\" unitRef=\"shares\">2666636</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-310\" decimals=\"0\" id=\"f-1436\" unitRef=\"shares\">252151</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-311\" decimals=\"INF\" id=\"f-1437\" unitRef=\"shares\">322053</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-312\" decimals=\"0\" id=\"f-1438\" unitRef=\"shares\">330479</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-313\" decimals=\"INF\" id=\"f-1439\" unitRef=\"shares\">666405</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber contextRef=\"c-312\" decimals=\"0\" id=\"f-1838\" unitRef=\"shares\">330479</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber>\n\t<bxp:EmployeeAndDirectorPaymentPerShare contextRef=\"c-428\" decimals=\"2\" id=\"f-1839\" unitRef=\"usdPerShare\">0.01</bxp:EmployeeAndDirectorPaymentPerShare>\n\t<bxp:EmployeeAndDirectorPaymentPerShare contextRef=\"c-429\" decimals=\"2\" id=\"f-1840\" unitRef=\"usdPerShare\">0.25</bxp:EmployeeAndDirectorPaymentPerShare>\n\t<bxp:ValueOfLtipUnitsIssued contextRef=\"c-432\" decimals=\"-3\" id=\"f-1843\" unitRef=\"usd\">25600000</bxp:ValueOfLtipUnitsIssued>\n\t<us-gaap:AllocatedShareBasedCompensationExpense contextRef=\"c-3\" decimals=\"-3\" id=\"f-1844\" unitRef=\"usd\">18500000</us-gaap:AllocatedShareBasedCompensationExpense>\n\t<us-gaap:AllocatedShareBasedCompensationExpense contextRef=\"c-12\" decimals=\"-3\" id=\"f-1845\" unitRef=\"usd\">25900000</us-gaap:AllocatedShareBasedCompensationExpense>\n\t<us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized contextRef=\"c-433\" decimals=\"-3\" id=\"f-1846\" unitRef=\"usd\">38900000</us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized>\n\t<us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized contextRef=\"c-434\" decimals=\"-3\" id=\"f-1847\" unitRef=\"usd\">5800000</us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized>\n\t<us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1 contextRef=\"c-435\" id=\"f-1848\">P2Y8M12D</us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1>\n\t<us-gaap:CommonStockValue contextRef=\"c-8\" decimals=\"-3\" id=\"f-169\" unitRef=\"usd\">1570000</us-gaap:CommonStockValue>\n\t<us-gaap:CommonStockValue contextRef=\"c-9\" decimals=\"-3\" id=\"f-170\" unitRef=\"usd\">1569000</us-gaap:CommonStockValue>\n\t<us-gaap:CommonStockValue contextRef=\"c-431\" decimals=\"-3\" id=\"f-1842\" unitRef=\"usd\">4900000</us-gaap:CommonStockValue>\n\t<bxp:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting contextRef=\"c-430\" decimals=\"0\" id=\"f-1841\" unitRef=\"number\">4</bxp:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAnnualInstallmentsForVesting>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward contextRef=\"c-421\" id=\"f-1828\">The 2024 MYLTIP awards consists of three components.  Two of the components, each weighted 40%, utilize BXP\u2019s TSR over a three year measurement period as the performance metrics and the third component utilizes a leverage ratio as the performance metric.</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardTermsOfAward>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized contextRef=\"c-422\" decimals=\"INF\" id=\"f-1829\" unitRef=\"shares\">0</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized contextRef=\"c-423\" decimals=\"INF\" id=\"f-1830\" unitRef=\"shares\">330479</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized>\n\t<us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized contextRef=\"c-424\" decimals=\"INF\" id=\"f-1831\" unitRef=\"shares\">165240</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized>\n\t</xbrl>\n\n\n\n##US GAAP Taxonomy\n[Concept Core]\nID: srt:RangeAxis\nLabel: Statistical Measurement [Axis]\nType: xbrli:stringItemType | Balance: None | PeriodType: duration | Abstract: True\nStatus: None | DeprecatedLabel: None | DeprecatedDate: None\nDocumentation:\nInformation by statistical measurement. Includes, but is not limited to, minimum, maximum, weighted average, arithmetic average, and median.\n\nProvenance: file=GAAP_Taxonomy_2024.xlsx | sheet=Concepts | row=285\n\n\n[Concept Relations]\nID: srt:RangeAxis\n\nPresentation:\n- Role: http://fasb.org/us-gaap/role/statement/CommonDomainMembers\n  Path: Statement [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/statement/CommonDomainMembers\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits\n  Path: Defined Benefit Plan [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits\n  Path: Defined Benefit Plan, Plan Assets, Allocation [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits\n  Path: Multiemployer Plan [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefits\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Reinsurance Retention [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Short-Duration Insurance Contracts, Discounted Liabilities [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOther\n  Path: Intangible Asset, Finite-Lived [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOther\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOther\n  Path: Goodwill [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOther\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthers\n  Path: Financing Receivable, Modified [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthers\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Redeemable Noncontrolling Interest [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/MinorityInterest\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/TemporaryEquity\n  Path: Redeemable Noncontrolling Interest [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/TemporaryEquity\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift\n  Path: Federal Home Loan Bank, Advance, Branch of FHLBank [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThrift\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentHoldings\n  Path: Schedule of Investments [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentHoldings\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchased\n  Path: Security Sold Short [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchased\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliates\n  Path: Schedule of Investments [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliates\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipment\n  Path: Property, Plant and Equipment [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipment\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies\n  Path: Loss Contingencies [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies\n  Path: Product Liability Contingency [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingencies\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-29MortgageLoansOnRealEstate\n  Path: SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-29MortgageLoansOnRealEstate\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensation\n  Path: Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensation\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/AccountingPolicies\n  Path: Property, Plant and Equipment [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/AccountingPolicies\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanks\n  Path: Federal Home Loan Bank, Advances [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanks\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/PayablesAndAccruals\n  Path: Supplier Finance Program [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/PayablesAndAccruals\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities\n  Path: Debt Securities, Available-for-Sale [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities\n  Path: Debt Securities, Held-to-Maturity [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligations\n  Path: Site Contingency [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligations\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligations\n  Path: Environmental Exit Cost [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligations\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Debt\n  Path: Schedule of Long-Term Debt Instruments [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Debt\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IncomeTaxes\n  Path: Change in Unrecognized Tax Benefit, Reasonably Possible [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IncomeTaxes\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IncomeTaxes\n  Path: Income Tax, Examination [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/IncomeTaxes\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities\n  Path: Derivative [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosures\n  Path: Fair Value Measurement Inputs and Valuation Techniques [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosures\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosures\n  Path: Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/FinancialInstrumentsFairValueDisclosures\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Contractors\n  Path: Construction Contractor, Receivable, to be Collected, after Year One, Interest Rate [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/Contractors\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/HealthCareOrganizations\n  Path: Malpractice Insurance [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/HealthCareOrganizations\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/RealEstate\n  Path: Real Estate [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/RealEstate\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-18SupplementalInformationForProperty-CasualtyInsuranceUnderwriters\n  Path: SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Table] > Statistical Measurement [Axis]\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-18SupplementalInformationForProperty-CasualtyInsuranceUnderwriters\n  Path: Statistical Measurement [Axis] > Statistical Measurement [Domain]\n  PreferredLabel: None\nProvenance: sheets include Presentation-like sheets\n\n\n[Concept Relations]\nID: srt:RangeAxis\n\nDefinition (Dimensions/Domain/Hypercube):\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:StatementTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfMultiemployerPlansTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfMultiemployerPlansTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfMultiemployerPlansTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfMultiemployerPlansTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherScheduleOfFiniteLivedIntangibleAssetsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherScheduleOfFiniteLivedIntangibleAssetsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherScheduleOfFiniteLivedIntangibleAssetsTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfGoodwillTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherScheduleOfGoodwillTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherScheduleOfGoodwillTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IntangibleAssetsGoodwillAndOtherScheduleOfGoodwillTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:RedeemableNoncontrollingInterestByLegalEntityTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:RedeemableNoncontrollingInterestByLegalEntityTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/TemporaryEquityRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/TemporaryEquityRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/TemporaryEquityRedeemableNoncontrollingInterestByLegalEntityTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfInvestmentsTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/InvestmentHoldingsScheduleOfInvestmentsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentHoldingsScheduleOfInvestmentsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentHoldingsScheduleOfInvestmentsTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:InvestmentsSoldNotYetPurchasedTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedInvestmentsSoldNotYetPurchasedTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedInvestmentsSoldNotYetPurchasedTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedInvestmentsSoldNotYetPurchasedTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfInvestmentsTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliatesScheduleOfInvestmentsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliatesScheduleOfInvestmentsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliatesScheduleOfInvestmentsTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfFinancingReceivableTroubledDebtRestructuringsTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthersScheduleOfFinancingReceivableTroubledDebtRestructuringsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthersScheduleOfFinancingReceivableTroubledDebtRestructuringsTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/ReceivablesLoansNotesReceivableAndOthersScheduleOfFinancingReceivableTroubledDebtRestructuringsTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurancePolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurancePolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurancePolicyholderAccountBalanceGuaranteedMinimumCreditingRateTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ProductLiabilityContingencyTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesProductLiabilityContingencyTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesProductLiabilityContingencyTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesProductLiabilityContingencyTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=srt:MortgageLoansOnRealEstateScheduleTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-29MortgageLoansOnRealEstateMortgageLoansOnRealEstateScheduleTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-29MortgageLoansOnRealEstateMortgageLoansOnRealEstateScheduleTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-29MortgageLoansOnRealEstateMortgageLoansOnRealEstateScheduleTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfDefinedBenefitPlansDisclosuresTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfDefinedBenefitPlansDisclosuresTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfDefinedBenefitPlansDisclosuresTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsScheduleOfDefinedBenefitPlansDisclosuresTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsStockCompensationScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:FederalHomeLoanBankAdvancesTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanksFederalHomeLoanBankAdvancesTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanksFederalHomeLoanBankAdvancesTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/FinancialServicesFederalHomeLoanBanksFederalHomeLoanBankAdvancesTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:SupplierFinanceProgramTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualsSupplierFinanceProgramTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualsSupplierFinanceProgramTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/PayablesAndAccrualsSupplierFinanceProgramTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfPropertyPlantAndEquipmentTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/AccountingPoliciesScheduleOfPropertyPlantAndEquipmentTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/AccountingPoliciesScheduleOfPropertyPlantAndEquipmentTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/AccountingPoliciesScheduleOfPropertyPlantAndEquipmentTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:DebtSecuritiesAvailableForSaleTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesDebtSecuritiesAvailableForSaleTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesDebtSecuritiesAvailableForSaleTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesDebtSecuritiesAvailableForSaleTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfHeldToMaturitySecuritiesTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecuritiesScheduleOfHeldToMaturitySecuritiesTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfPropertyPlantAndEquipmentTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/PropertyPlantAndEquipmentScheduleOfPropertyPlantAndEquipmentTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:SiteContingencyTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsSiteContingencyTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsSiteContingencyTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsSiteContingencyTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:ScheduleOfEnvironmentalExitCostTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsScheduleOfEnvironmentalExitCostTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsScheduleOfEnvironmentalExitCostTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/EnvironmentalRemediationObligationsScheduleOfEnvironmentalExitCostTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:LossContingenciesTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesLossContingenciesTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesLossContingenciesTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CommitmentAndContingenciesLossContingenciesTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:DebtInstrumentTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/DebtDebtInstrumentTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/DebtDebtInstrumentTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/DebtDebtInstrumentTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:DefinedBenefitPlanPlanAssetsAllocationTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsDefinedBenefitPlanPlanAssetsAllocationTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsDefinedBenefitPlanPlanAssetsAllocationTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/CompensationRelatedCostsRetirementBenefitsDefinedBenefitPlanPlanAssetsAllocationTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/IncomeTaxesSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IncomeTaxesSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IncomeTaxesSignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleTable)\n- http://xbrl.org/int/dim/arcrole/hypercube-dimension: from=us-gaap:IncomeTaxExaminationTable -> to=srt:RangeAxis (role=http://fasb.org/us-gaap/role/disclosure/IncomeTaxesIncomeTaxExaminationTable)\n- http://xbrl.org/int/dim/arcrole/dimension-domain: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/IncomeTaxesIncomeTaxExaminationTable)\n- http://xbrl.org/int/dim/arcrole/dimension-default: from=srt:RangeAxis -> to=srt:RangeMember (role=http://fasb.org/us-gaap/role/disclosure/In\n\nQuestion: What erroneous relationship type exists between srt:RangeAxis and bxp:TargetMember, based on the provided XBRL filing and the US GAAP taxonomy?\nAnswer:\n\n    "

Answer: "CombinationErr"