New York · Nonprofit
SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY
SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY (New York) receives grants from 2 organizations whose IRS filings report $650 to it, the largest being VERIZON FOUNDATION ($500). 0 of them have funded it in more than one year.
Against its field
SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY runs a healthier operating margin than three-quarters of the 3,146 environment nonprofits its size.
this organization peer median middle 50% of peers· 3,146 environment nonprofits under $100k, FY2024
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Charles and Helen Reichert Family Foundation Inclocalportfolio match
- Sunshine Foundationshared funders
- 1772 Foundation Incportfolio match
Who funds it, year by year
Grant support over time, funder by funder — shade shows the grant size each year.
From the IRS filings of SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY’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
SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY leans on a few funders — its largest provides 77% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
“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.
Where its funders are
SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY draws 77% of its grant income from funders outside New York, across 2 states in all.
Funder states come from each funder’s own filing. 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.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
- Charles and Helen Reichert Family Foundation Inclocalportfolio matchNY · funds 23 organizations near you · its grantees resemble your mission
- Sunshine Foundationshared fundersNY · backs 55 organizations that share your funders
- 1772 Foundation Incportfolio matchits grantees resemble your mission
- National Trust for Historic Preservation in the United Statesportfolio matchits grantees resemble your mission
- Blair E & Anna L Zimmerman Foundation Trustportfolio matchits grantees resemble your mission
- The William G Pomeroy Foundationportfolio matchits grantees resemble your mission
- Western Shade Cloth Charitable Foundation a Nevada Nonprofit Corpportfolio matchits grantees resemble your mission
- Florida Humanities Council Incportfolio matchits grantees resemble your mission
- William M & Donna J Hoaglin Foundation Incportfolio matchits grantees resemble your mission
- Joseph Robert Foundation Incportfolio matchits grantees resemble your mission
- Reeves Foundationportfolio matchits grantees resemble your mission
- Northwest Alabama Resource Conservation & Developement Councilportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of 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.
Screen this organization
A dated, signed PDF of the compliance screen for SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY: 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. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY?
- SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY (New York) receives grants from 2 organizations whose IRS filings report $650 to it, the largest being VERIZON FOUNDATION ($500). 0 of them have funded it in more than one year.
- How many funders does SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY have?
- IRS filings report 2 organizations giving $650 in grants to SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY.
- Who is the largest funder of SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY?
- VERIZON FOUNDATION is the largest funder on record, with $500 in grants. The full list of funders is on this page.
- How can an organization like SHELTER ISLAND HEIGHTS PRESERVATION AND IMPROVEMENT SOCIETY 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.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2024 (financials across 2024–2024), and the filings of 2funders 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 August 27, 2026. What this page cannot tell you · view filing