Liabilities / Assets
33rd percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 04-3486255 • 501(c)3 • Arlington, MA
Profile
Protection of conservation land in Arlington, MA; providing public access to conserved land; education regarding conservation.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
33rd percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
34th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
71st percentile
Higher net margin than 71% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
54th percentile
Faster asset growth than 54% of similar nonprofits.
Revenue Growth
79th percentile
Faster revenue growth than 79% of similar nonprofits.
Assets
Up$811,703
Up $37,403 (+4.8%) from 2023
Liabilities
Flat$0
Flat from 2023
Net Assets
Up$811,703
Up $37,403 (+4.8%) from 2023
Revenue
Up$64,194
Up $17,622 (+38%) from 2023
Expenses
Up$52,698
Up $21,828 (+71%) from 2023
Net Income
Down$11,496
Down $4,206 (-27%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
Alt's mission is to protect conservation land in arlington, massachusetts, provide public access to conserved land and education regarding conservation.
The arlington land trust, inc.'s (alt) mission is to protect conservation land in arlington, massachusetts, provide public access to conserved land and education regarding conservation.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $288,001 | $322,267 | ▲ $34,266 |
| Land, Buildings, and Equipment, Net | $265,140 | $265,140 | → $0 |
| Savings and Temporary Cash Investments | $140,472 | $141,850 | ▲ $1,378 |
| Cash and Non-Interest-Bearing Accounts | $80,687 | $80,748 | ▲ $61 |
| Inventories for Sale or Use | - | $1,678 | - |
| Total Assets | $774,300 | $811,703 | ▲ $37,403 |
| Other Assets Total | - | $20 | - |
| Liabilities | |||
| Total Liabilities | $0 | $0 | → $0 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $368,687 | $406,090 | ▲ $37,403 |
| Net Assets With Donor Restrictions | $405,613 | $405,613 | → $0 |
| Total Net Assets Fund Balance | $774,300 | $811,703 | ▲ $37,403 |
| Total Liabilities and Net Assets / Fund Balance | $774,300 | $811,703 | ▲ $37,403 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Land | $265,140 | - | - |
| Name | Title |
|---|---|
| Christopher Leich | President |
| Clarissa Rowe | Vice President |
| Alice Bennett | Director |
| Angel Mozina | Director |
| Bancroft Poor | Director |
| Carol Kowalski | Director |
| John F Page | Director |
| Nellie Aikenhead | Director |
| Peter Belknap | Director |
| Ted Siegan | Director |
| Ann Leroyer | Secretary |
| Nora Frank | Treasurer |
| Line Item | Amount |
|---|---|
| Other Expenses | $49,698 |
| Grants and Similar Amounts Paid | $3,000 |
| Total Fundraising Expense | $2,075 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Fees for Services Other | $35,007 | $2,228 | - | $37,235 |
| Office Expenses | $965 | $547 | $2,075 | $3,587 |
| Grants to Domestic Individuals | $3,000 | - | - | $3,000 |
| Insurance | - | $996 | - | $996 |
| Conferences and Meetings | $894 | - | - | $894 |
| Fees for Services Accounting | - | $750 | - | $750 |
| Other Expenses | $5,758 | $156 | - | $156 |
| Advertising | - | $72 | - | $72 |
| Total Functional Expenses | $45,624 | $4,999 | $2,075 | $52,698 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Alt is a membership corporation organized under massachusetts ch180.”
“All dues paying members are eligible to vote at the annual meeting to elect the board of directors.”
“The form 990 is reviewed in detail by the treasurer and made available to all board members for review and comment prior to filing”
“Financial statements are available to the public upon request. Governing documents are available upon request and via the massachusetts secretary of state's website. Alt does not have its own conflict of interest policy and relies on massachusetts attorney general guidelines.”
“Other consultants: program service expenses 35,007. Management and general expenses 2,228. Fundraising expenses 0. Total expenses 37,235.”
“The organization does not value conservation easements within the financial records”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
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| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | THE ARLINGTON LAND TRUST, INC.'S (ALT) MISSION IS TO PROTECT CONSERVATION LAND IN ARLINGTON, MASSACHUSETTS, PROVIDE PUBLIC ACCESS TO CONSERVED LAND AND EDUCATION REGARDING CONSERVATION. |
| IRS990/AdvertisingGrp/ManagementAndGeneralAmt | 0 | 72 |
| IRS990/AdvertisingGrp/TotalAmt | 0 | 72 |
| IRS990/AllOtherContributionsAmt | 0 | 53874 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | NORA FRANK |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6178724030 |
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| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | ARLINGTON |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 02476 |
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| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 80748 |
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| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 894 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 894 |
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| IRS990/ConservationEasementsInd | 0 | 1 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 53874 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 3000 |
| IRS990/CYInvestmentIncomeAmt | 0 | 10080 |
| IRS990/CYOtherExpensesAmt | 0 | 49698 |
| IRS990/CYOtherRevenueAmt | 0 | 240 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | 11496 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 0 |
| IRS990/CYTotalExpensesAmt | 0 | 52698 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 2075 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 64194 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/Desc | 0 | STEWARDSHIP, PROTECTION AND PUBLIC ACCESS TO ELIZABETH ISLAND IN SPY POND, THE SYMMES HOSPITAL CONSERVATION AREA AND THE RESERVOIR GARDEN, ALL OPEN SPACES IN THE TOWN OF ARLINGTON MA. EFFORTS TO PERMANENTLY PRESERVE OTHER OPEN SPACES IN THE TOWN. PUBLIC MEETINGS AND INFORMATION MAILINGS REGARDING LAND CONSERVATION AND OTHER ENVIRONMENTAL ISSUES |
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| IRS990/DonorAdvisedFundInd | 0 | 0 |
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| IRS990/DonorRestrictionNetAssetsGrp/EOYAmt | 0 | 405613 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 1 |
| IRS990/EmployeeCnt | 0 | 0 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 45624 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 0 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 750 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 750 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 2228 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 35007 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 37235 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 1.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 11 | 1.00 |
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| 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 |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 7 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 9 | X |
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| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 11 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | CAROL KOWALSKI |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | BANCROFT POOR |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | ALICE BENNETT |
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| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | CHRISTOPHER LEICH |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | CLARISSA ROWE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | JOHN F PAGE |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | ANN LEROYER |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 0 |
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| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 0 |
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| 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/TitleTxt | 0 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | VICE PRESIDENT |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | SECRETARY |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 11 | DIRECTOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 1999 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedInd | 0 | 0 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 12 |
| IRS990/GrantAmt | 0 | 3000 |
| IRS990/GrantsToDomesticIndividualsGrp/ProgramServicesAmt | 0 | 3000 |
| IRS990/GrantsToDomesticIndividualsGrp/TotalAmt | 0 | 3000 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossReceiptsAmt | 0 | 64194 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 12 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 0 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartIXInd | 0 | X |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 996 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 996 |
| IRS990/InventoriesForSaleOrUseGrp/EOYAmt | 0 | 1678 |
| IRS990/InvestmentIncomeGrp/RelatedOrExemptFuncIncomeAmt | 0 | 10080 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 10080 |
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| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 288001 |
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| IRS990/IRPDocumentCnt | 0 | 0 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
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| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 265140 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 265140 |
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| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 1 |
| IRS990/MethodOfAccountingCashInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | ALT'S MISSION IS TO PROTECT CONSERVATION LAND IN ARLINGTON, MASSACHUSETTS, PROVIDE PUBLIC ACCESS TO CONSERVED LAND AND EDUCATION REGARDING CONSERVATION. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 774300 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 811703 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 25907 |
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| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 406090 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OfficeExpensesGrp/FundraisingAmt | 0 | 2075 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 547 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 965 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 3587 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherAssetsTotalGrp/EOYAmt | 0 | 20 |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
| IRS990/OtherExpensesGrp/Desc | 0 | LAND STEWARDSHIP |
| IRS990/OtherExpensesGrp/Desc | 1 | DUES AND SUBSCRIPTIONS |
| IRS990/OtherExpensesGrp/Desc | 2 | BANK FEES |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 0 | 250 |
| IRS990/OtherExpensesGrp/ManagementAndGeneralAmt | 1 | 156 |
| IRS990/OtherExpensesGrp/ProgramServicesAmt | 0 | 5758 |
| IRS990/OtherExpensesGrp/TotalAmt | 0 | 5758 |
| IRS990/OtherExpensesGrp/TotalAmt | 1 | 250 |
| IRS990/OtherExpensesGrp/TotalAmt | 2 | 156 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 458000 |
| IRS990/OtherRevenueMiscGrp/Desc | 0 | GAIN ON SALE OF PRODUC |
| IRS990/OtherRevenueMiscGrp/RelatedOrExemptFuncIncomeAmt | 0 | 240 |
| IRS990/OtherRevenueMiscGrp/TotalRevenueColumnAmt | 0 | 240 |
| IRS990/OtherRevenueTotalAmt | 0 | 240 |
| IRS990/OwnWebsiteInd | 0 | X |
| IRS990/PartialLiquidationInd | 0 | 0 |
| IRS990/PayPremiumsPrsnlBnftCntrctInd | 0 | 0 |
| IRS990/PoliticalCampaignActyInd | 0 | 0 |
| IRS990/PrincipalOfficerNm | 0 | CHRISTOPHER LEICH |
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| IRS990/ProhibitedTaxShelterTransInd | 0 | 0 |
| IRS990/PYBenefitsPaidToMembersAmt | 0 | 0 |
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| IRS990/PYExcessBenefitTransInd | 0 | 0 |
| IRS990/PYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/PYInvestmentIncomeAmt | 0 | 464 |
| IRS990/PYOtherExpensesAmt | 0 | 30870 |
| IRS990/PYOtherRevenueAmt | 0 | 0 |
| IRS990/PYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/PYRevenuesLessExpensesAmt | 0 | 15702 |
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| IRS990/PYTotalExpensesAmt | 0 | 30870 |
| IRS990/PYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/PYTotalRevenueAmt | 0 | 46572 |
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| IRS990/ReconcilationRevenueExpnssAmt | 0 | 11496 |
| IRS990/RelatedEntityInd | 0 | 0 |
| IRS990/RelatedOrganizationCtrlEntInd | 0 | 0 |
| IRS990/ReportInvestmentsOtherSecInd | 0 | 0 |
| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
| IRS990/ReportOtherAssetsInd | 0 | 0 |
| IRS990/ReportOtherLiabilitiesInd | 0 | 0 |
| IRS990/ReportProgramRelatedInvstInd | 0 | 0 |
| IRS990/SavingsAndTempCashInvstGrp/BOYAmt | 0 | 140472 |
| IRS990/SavingsAndTempCashInvstGrp/EOYAmt | 0 | 141850 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt | 0 | 36584 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt | 0 | 46108 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 74773 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 46679 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 33249 |
| IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt | 0 | 237393 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt | 0 | 6 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 12697 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 2083 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 9635 |
| IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt | 0 | 24421 |
| IRS990ScheduleA/GrossReceiptsRltdActivitiesAmt | 0 | 239 |
| IRS990ScheduleA/PublicOrganization170Ind | 0 | X |
| IRS990ScheduleA/PublicSupportCY170Pct | 0 | 0.90670 |
| IRS990ScheduleA/PublicSupportPY170Pct | 0 | 0.88190 |
| IRS990ScheduleA/PublicSupportTotal170Amt | 0 | 237393 |
| IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind | 0 | X |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt | 0 | 36584 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt | 0 | 46108 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt | 0 | 74773 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt | 0 | 46679 |
| IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt | 0 | 33249 |
| IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt | 0 | 237393 |
| IRS990ScheduleA/TotalSupportAmt | 0 | 261814 |
| IRS990/ScheduleBRequiredInd | 0 | 0 |
| IRS990ScheduleD/ExpensesIncurredEnforcementAmt | 0 | 650 |
| IRS990ScheduleD/LandGrp/BookValueAmt | 0 | 265140 |
| IRS990ScheduleD/LandGrp/InvestmentCostOrOtherBasisAmt | 0 | 265140 |
| IRS990ScheduleD/ModifiedEasementsCnt | 0 | 0 |
| IRS990ScheduleD/PreservationOpenSpaceInd | 0 | X |
| IRS990ScheduleD/PreservationPublicUseInd | 0 | X |
| IRS990ScheduleD/ProtectionNaturalHabitatInd | 0 | X |
| IRS990ScheduleD/Section170hRqrStsfdInd | 0 | 1 |
| IRS990ScheduleD/StaffHoursSpentEnforcementCnt | 0 | 6.00 |
| IRS990ScheduleD/StatesEasementsHeldCnt | 0 | 1 |
| IRS990ScheduleD/SupplementalInformationDetail/ExplanationTxt | 0 | THE ORGANIZATION DOES NOT VALUE CONSERVATION EASEMENTS WITHIN THE FINANCIAL RECORDS |
| IRS990ScheduleD/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | PART II, LINE 9: |
| IRS990ScheduleD/TotalAcreageCnt | 0 | 12.00 |
| IRS990ScheduleD/TotalBookValueLandBuildingsAmt | 0 | 265140 |
| IRS990ScheduleD/TotalEasementsCnt | 0 | 2 |
| IRS990ScheduleD/WrittenPolicyMonitoringInd | 0 | 0 |
| IRS990/ScheduleJRequiredInd | 0 | 0 |
| IRS990/ScheduleORequiredInd | 0 | 1 |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | ALT IS A MEMBERSHIP CORPORATION ORGANIZED UNDER MASSACHUSETTS CH180. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | ALL DUES PAYING MEMBERS ARE ELIGIBLE TO VOTE AT THE ANNUAL MEETING TO ELECT THE BOARD OF DIRECTORS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | THE FORM 990 IS REVIEWED IN DETAIL BY THE TREASURER AND MADE AVAILABLE TO ALL BOARD MEMBERS FOR REVIEW AND COMMENT PRIOR TO FILING |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST. GOVERNING DOCUMENTS ARE AVAILABLE UPON REQUEST AND VIA THE MASSACHUSETTS SECRETARY OF STATE'S WEBSITE. ALT DOES NOT HAVE ITS OWN CONFLICT OF INTEREST POLICY AND RELIES ON MASSACHUSETTS ATTORNEY GENERAL GUIDELINES. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | OTHER CONSULTANTS: PROGRAM SERVICE EXPENSES 35,007. MANAGEMENT AND GENERAL EXPENSES 2,228. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 37,235. |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990, PART VI, SECTION A, LINE 6 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PART VI, SECTION A, LINE 7A |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART VI, SECTION B, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PART VI, SECTION C, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PART IX, LINE 11G |
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| IRS990/SignificantChangeInd | 0 | 0 |
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| IRS990/SubjectToProxyTaxInd | 0 | 0 |
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| IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt | 0 | 4999 |
| IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt | 0 | 45624 |
| IRS990/TotalFunctionalExpensesGrp/TotalAmt | 0 | 52698 |
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| IRS990/TotalLiabilitiesEOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/BOYAmt | 0 | 0 |
| IRS990/TotalLiabilitiesGrp/EOYAmt | 0 | 0 |
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| IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt | 0 | 811703 |
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| IRS990/TotalRevenueGrp/ExclusionAmt | 0 | 0 |
| IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt | 0 | 10320 |
| IRS990/TotalRevenueGrp/TotalRevenueColumnAmt | 0 | 64194 |
| IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt | 0 | 0 |
| IRS990/TotalVolunteersCnt | 0 | 0 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt | 0 | 774300 |
| IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt | 0 | 811703 |
| IRS990/TotReportableCompRltdOrgAmt | 0 | 0 |
| IRS990/TrnsfrExmptNonChrtblRltdOrgInd | 0 | 0 |
| IRS990/TypeOfOrganizationCorpInd | 0 | X |
| IRS990/UnrelatedBusIncmOverLimitInd | 0 | 0 |
| IRS990/UponRequestInd | 0 | X |
| IRS990/USAddress/AddressLine1Txt | 0 | PO BOX 492 |
| IRS990/USAddress/CityNm | 0 | ARLINGTON |
| IRS990/USAddress/StateAbbreviationCd | 0 | MA |
| IRS990/USAddress/ZIPCd | 0 | 02476 |
| IRS990/VotingMembersGoverningBodyCnt | 0 | 12 |
| IRS990/VotingMembersIndependentCnt | 0 | 12 |
| IRS990/WebsiteAddressTxt | 0 | WWW.ARLINGTONLANDTRUST.ORG |
| IRS990/WhistleblowerPolicyInd | 0 | 0 |
| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | CHRISTOPHER LEICH |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | PRESIDENT |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 3397075020 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-04-30 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | ARLINGTON LAND TRUST INC |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | ARLI |
| ReturnHeader/Filer/EIN | 0 | 043486255 |
| ReturnHeader/Filer/PhoneNum | 0 | 3397075020 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | PO BOX 492 |
| ReturnHeader/Filer/USAddress/CityNm | 0 | ARLINGTON |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 02476 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | 0 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmEIN | 0 | 383697447 |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | NON PROFIT CAPITAL MANAGEMENT LLC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 153 CLINTON RD |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | STERLING |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | MA |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 015642357 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 7819336726 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2025-04-30 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | BRIAN KINDORF |
| ReturnHeader/ReturnTs | 0 | 2025-04-30T10:00:25-05:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2024-01-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-12-31 |
| ReturnHeader/TaxYr | 0 | 2024 |
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