| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 15758 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 22353 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE BSA FOUNDATION EXISTS TO IMPROVE THE QUALITY OF LIFE FOR BOSTON-AREA RESIDENTS BY CHAMPIONING INNOVATION IN THE BUILT ENVIRONMENT. |
| IRS990/AllOtherContributionsAmt | 0 | 127445 |
| IRS990/AllOtherExpensesGrp/ManagementAndGeneralAmt | 0 | 441 |
| IRS990/AllOtherExpensesGrp/TotalAmt | 0 | 441 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/AuditCommitteeInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | THE ORGANIZATION |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6179511433 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 290 CONGRESS ST 200 |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | BOSTON |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 02210 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 65501 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 74230 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt | 0 | 41335 |
| IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt | 0 | 38282 |
| IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt | 0 | 73632 |
| IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt | 0 | 153249 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 1 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 655090 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 70359 |
| IRS990/CYOtherExpensesAmt | 0 | 151750 |
| IRS990/CYOtherRevenueAmt | 0 | 1048 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 6786 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -460393 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 1041926 |
| IRS990/CYTotalExpensesAmt | 0 | 1193676 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 299573 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 733283 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DeferredRevenueGrp/EOYAmt | 0 | 12100 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/Desc | 0 | THE EDUCATIONAL PROGRAMS AND EXHIBITS HOSTED BY THE BSA FOUNDATION ENABLE IT TO PROVIDE COMMUNITIES WITH A WIDE ARRAY OF RESOURCES THAT HIGHLIGHT IMPORTANT ASPECTS OF ARCHITECTURE AND THE BUILT ENVIRONMENT AND DEMONSTRATE HOW THEY CAN BE LEVERAGED TO ADDRESS EQUITY AND CLIMATE CHANGE. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRestrictionNetAssetsGrp/BOYAmt | 0 | 853110 |
| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 478425 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 575729 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 21716 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 21716 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 9326 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 9326 |
| IRS990/FeesForServicesOtherGrp/FundraisingAmt | 0 | 18965 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 18965 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/ManagementAndGeneralAmt | 0 | 9275 |
| IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt | 0 | 9275 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 12 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 13 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 14 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 15 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 16 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 17 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 18 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 19 | 20.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 5 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 6 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 8 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 10 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 12 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 13 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 14 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 15 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 16 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 17 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 18 | 19957 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 19 | 12126 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | ANN BEHA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | BENNET HEART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | BUD RIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | DAVID MANFREDI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | DAVID SILVERMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | DEVANSHI PUROHIT |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | ERIC KRAUSS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | GREG BIALECKI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JULIANNA STUART |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | KENNETH WILLIS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | LAURA WERNICK |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 11 | MEERA DEEAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 12 | PATRICIA GRUITS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 13 | PATRICK MCCAFFERTY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 14 | PETER KUTTNER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 15 | REBECCA BERRY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 16 | RICHARD TAYLOR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 17 | THEODORE TOULOUKIAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 18 | ERIC WHITE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 19 | JACOB NIGEL |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 18 | 143270 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 19 | 81715 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 11 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 12 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 13 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 14 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 15 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 16 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 17 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 18 | 193270 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 19 | 81714 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CHAIR & TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TREASURER AND TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | TRUSTEE & LIASON |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | SECRETARY AND TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 12 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 13 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 14 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 15 | VICE CHAIR AND TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 16 | TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 17 | PAST CHAIR AND TRUSTEE |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 18 | EXECUTIVE DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 19 | PROGRAM MANAGER |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1971 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedBasisGrp/SeparateBasisFinclStmtInd | 0 | X |
| IRS990/FSAuditedInd | 0 | 1 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 872 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 18 |
| IRS990/GovernmentGrantsAmt | 0 | 99710 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 97687 |
| IRS990/GrossReceiptsAmt | 0 | 830098 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 1 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 1 |
| IRS990/IndependentVotingMemberCnt | 0 | 18 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIIIInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 4854 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 4854 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 3435 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 3435 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 69487 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 69487 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 2022280 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 2003030 |
| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 2925 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 0 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 0 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 2925 |
| IRS990/LegalDomicileStateCd | 0 | MA |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 96815 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE BSA FOUNDATION EXISTS TO IMPROVE THE QUALITY OF LIFE FOR BOSTON-AREA RESIDENTS BY CHAMPIONING INNOVATION IN THE BUILT ENVIRONMENT. AS A COMMUNITY NON-PROFIT ORGANIZATION, WE ACHIEVE THIS MISSION IN PARTNERSHIP WITH THE BOSTON SOCIETY OF ARCHITECTS BY CATALYZING AND COLLABORATING ON INNOVATION INITIATIVES AIMED AT ADDRESSING EQUITY AND SUSTAINABILITY CHALLENGES IN THE BUILT ENVIRONMENT. OUR GOAL IS TO BUILD A HEALTHY, JUST AND SUSTAINABLE BOSTON, TOGETHER. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 2940954 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 2623678 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 872 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 872 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 143117 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 2087844 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 2145253 |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 1176 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 1176 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/BOYAmt | 0 | 187030 |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 38285 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt | 0 | 15250 |
| IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt | 0 | 14172 |
| IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt | 0 | 27967 |
| IRS990/OtherEmployeeBenefitsGrp/TotalAmt | 0 | 57389 |
| IRS990/OtherExpensesGrp/Desc | 0 | COMMUNITY AND COLLABORA |
| IRS990/OtherExpensesGrp/Desc | 1 | EXHIBITIONS |
| IRS990/OtherExpensesGrp/Desc | 2 | BAD DEBT EXPENSE |
| IRS990/OtherExpensesGrp/Desc | 3 | OTHER TAXES & FEES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 4540 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 3641 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 63384 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 1 | 10997 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 63384 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 10997 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 4540 |
| IRS990/OtherExpensesGrp/TotalAmt | 3 | 3641 |
| IRS990/OtherLiabilitiesGrp/BOYAmt | 0 | 270669 |
| IRS990/OtherLiabilitiesGrp/EOYAmt | 0 | 32085 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 541300 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | EXPENSE ADJUSTMENT |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 1048 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 1048 |
| IRS990/OtherRevenueTotalAmt | 0 | 1048 |
| IRS990/OtherSalariesAndWagesGrp/FundraisingAmt | 0 | 197534 |
| IRS990/OtherSalariesAndWagesGrp/ManagementAndGeneralAmt | 0 | 182902 |
| IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt | 0 | 351171 |
| IRS990/OtherSalariesAndWagesGrp/TotalAmt | 0 | 731607 |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayrollTaxesGrp/FundraisingAmt | 0 | 21664 |
| IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt | 0 | 20131 |
| IRS990/PayrollTaxesGrp/ProgramServicesAmt | 0 | 39729 |
| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 81524 |
| IRS990/PensionPlanContributionsGrp/FundraisingAmt | 0 | 4825 |
| IRS990/PensionPlanContributionsGrp/ManagementAndGeneralAmt | 0 | 4483 |
| IRS990/PensionPlanContributionsGrp/ProgramServicesAmt | 0 | 8849 |
| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 18157 |
| IRS990/PledgesAndGrantsReceivableGrp/BOYAmt | 0 | 746460 |
| IRS990/PledgesAndGrantsReceivableGrp/EOYAmt | 0 | 435275 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrepaidExpensesDefrdChargesGrp/BOYAmt | 0 | 19809 |
| IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt | 0 | 5218 |
| IRS990/PrincipalOfficerNm | 0 | KIMBERLEE SCHUMACHER |
| IRS990/ProfessionalFundraisingInd | 0 | 0 |
| IRS990/ProgramServiceRevenueGrp/BusinessCd | 0 | 541300 |
| IRS990/ProgramServiceRevenueGrp/Desc | 0 | PUBLIC AND CIVIC PROGR |
| IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 6786 |
| IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt | 0 | 6786 |
| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/PYContributionsGrantsAmt | 0 | 1426083 |
| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 4786 |
| IRS990/PYOtherExpensesAmt | 0 | 583192 |
| IRS990/PYOtherRevenueAmt | 0 | 1330 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 8337 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | -196349 |
| IRS990/PYSalariesCompEmpBnftPaidAmt | 0 | 1053693 |
| IRS990/PYTotalExpensesAmt | 0 | 1636885 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 1440536 |
| IRS990/QuidProQuoContributionsInd | 0 | 0 |
| IRS990/ReconcilationRevenueExpnssAmt | 0 | -460393 |
| IRS990/RegularMonitoringEnfrcInd | 0 | 1 |
| IRS990/RelatedEntityInd | 0 | 1 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/RelatedOrganizationsAmt | 0 | 427935 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 1 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/RevenueAmt | 0 | 6786 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 186301 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 134178 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 656138 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1426083 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 708723 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 787017 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 890276 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 4468237 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt | 0 | 69487 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 88340 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 160044 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 99555 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 85175 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 502601 |
| IRS990ScheduleA/GrossReceiptsRltdActivitiesAmt | 0 | 185669 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.89890 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.90900 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 4468237 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 656138 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 1426083 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 708723 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 787017 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 890276 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 4468237 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 4970838 |
| IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorNum | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine1 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine2 | 0 | RESTRICTED |
| IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City | 0 | RESTRICTED |