New York · Nonprofit
OLD STONE HOUSE OF BROOKLYN
OLD STONE HOUSE OF BROOKLYN (New York) receives grants from 10 organizations whose IRS filings report $235,972 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($175,525). 5 of them have funded it in more than one year, and 83% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $555k
- Funders on record
- 10
- Grants received
- $236k
- Net assets
- $417k
What Old Stone House of Brooklyn does
Mission
The organization's mission is to draw on its history - lenape homeland, dutch colonization, american revolution and beyond - to educate, inspire, and promote civic engagement in the following ways:- programming focuses on the pre-colonial history of the gowanus, brooklyn's dutch colonial era, the battle of brooklyn, and the environment. We fulfill our mission by stewarding washington park and the j.j. Byrne playground by developing gardens of native and historic plants and garnering $20,000,000 for an accessible building, an interpretive playground, and recreational renovations.- encouraging civic engagement by providing space for community meetings, participatory budgeting and other activities that raise awareness of civics and democracy.- offering cultural events programming that supports small and medium-sized arts organizations while meeting the needs and interests of our community.
As stated on its FY2025 Form 990.
Program
In the past decade, the corporation has advocated for more than $20,000,000 in park improvements, including a soon-to-be-implemented accessibility project that will make the building accessible for the first time in ninety-nine years via an elevator to the 2nd floor, and restrooms. Additional improvements include 1.5 acres of landscape design for sustainability and water capture, playground improvements, and a dog run renovation that was completed in 2024.
$439,115 spent$184,409 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $439,115.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2022 to 2023, from $395k to $462k (+17%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2017 12% · 2018 12% · 2019 13% · 2020 20% · 2021 13% · 2022 16% · 2023 28% · 2024 30% · 2025 33%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Board chair
Nancy Rosenberg
Chairperson
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 4 funders, grant income rose $500 → $89k.
3 of 10 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 83% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of OLD STONE HOUSE OF BROOKLYN’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
OLD STONE HOUSE OF BROOKLYN leans on a few funders — its largest provides 74% of grant income and the top three 89%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
96% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund OLD STONE HOUSE OF BROOKLYN.
Largest funder’s share by year: 2017 100% · 2018 54% · 2019 98% · 2020 65% · 2021 46% · 2022 74% · 2023 88% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
60% of OLD STONE HOUSE OF BROOKLYN's funders are still giving 3 years after their first grant; 50% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
83% of OLD STONE HOUSE OF BROOKLYN's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $40k that is directly attributable, 75% of it comes from New York funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $196k arriving through sponsors registered in 3 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Government funding OLD STONE HOUSE OF BROOKLYN receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $20k on record.
- Institute of Museum and Library Services$20k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like OLD STONE HOUSE OF BROOKLYN
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In New York
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
75% of spending goes to programs.
Governance
Public support
89%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for OLD STONE HOUSE OF BROOKLYN: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds OLD STONE HOUSE OF BROOKLYN?
- OLD STONE HOUSE OF BROOKLYN (New York) receives grants from 10 organizations whose IRS filings report $235,972 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($175,525). 5 of them have funded it in more than one year, and 83% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does OLD STONE HOUSE OF BROOKLYN have?
- IRS filings report 10 organizations giving $235,972 in grants to OLD STONE HOUSE OF BROOKLYN, 5 of which have funded it in more than one year.
- Who is the largest funder of OLD STONE HOUSE OF BROOKLYN?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $175,525 in grants. The full list of funders is on this page.
- How can an organization like OLD STONE HOUSE OF BROOKLYN find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Old Stone House of Brooklyn →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 10 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing