How much does Peninsula Open Space Trust give?

Peninsula Open Space Trust reported 24 itemized grants totaling $6,466,125, out of $9,209,125 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 7 and 20 organizations a year over FY2017 to FY2024.

What does Peninsula Open Space Trust fund?

By grant dollars over FY2017 to FY2025, its largest causes are Environment (58%), Recreation & Sports (16%), Public Benefit (14%).

Who are Peninsula Open Space Trust's largest grantees?

By total granted over FY2017 to FY2025: City of San Jose ($4.7M), Santa Clara Valley Open Space Authority ($4.6M), Sempervirens Fund ($2.4M).

Does Peninsula Open Space Trust fund new organizations?

In FY2024, 40% of the organizations it funded were first-time grantees.

Which funders back the same organizations as Peninsula Open Space Trust?

Its strongest co-funders, measured against what their size predicts, include The David and Lucile Packard Foundation, Silicon Valley Community Foundation, Resources Legacy Fund.

Where is Peninsula Open Space Trust based?

Peninsula Open Space Trust is based in CA.

Foundation Dossiers Mostly funded, not a grantmaker: see who funds it →

California · Public charity

Peninsula Open Space Trust

Post protects open space on the peninsula and in the south bay for the benefit of all. Post is creating a network of protected lands where people and nature connect and thrive. These lands are preserved forever so present and future generations benefit from the careful... Balance of rural and urban landscapes that make our region…

$9.2M
Granted FY2025(still arriving): 24
Itemized grants FY2025: 20
Organizations funded FY2024: 40%
First-time grantees FY2024

Read the full brief

Itemized, FY2025: $6.5M; The rest is grants the schedule does not break out
Median grant, FY2025: $13,837
Largest grant, FY2025: $5,265,188
Organizations funded a year: 7 to 20; FY2017 to FY2024
States reached, FY2025: 2
Total assets, FY2025: $374M

How open it is to new grantees

In FY2024, 40% of the organizations Peninsula Open Space Trust funded were first-time grantees, receiving 14% of its grant dollars.

New vs renewed · share of each year

In FY2024, 86% of grant dollars renewed an existing relationship; $405k went to new ones.

RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

EnvironmentArts & CultureHuman ServicesRecreation & SportsEducationOther

How this is measured

First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

The numbers by year

Fiscal year	Organizations funded	To those organizations	First-time grantees
FY2025still arriving	24	$6.5M	29%
FY2024	20	$2.9M	40%
FY2023	12	$4.2M	25%
FY2022	14	$1.5M	21%
FY2021	10	$7.0M	70%
FY2020	13	$8.3M	23%
FY2019	13	$906k	62%
FY2017	7	$840k	n/a

100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Environment$19MRecreation & Sports$5.3MPublic Benefit$4.7MHousing & Shelter$2.9MEducation$484kCommunity Improvement$102kFood & Nutrition$69kArts & Culture$51kOther$0

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

Grantee	Total granted	Years	Share of their budget
City of San Jose	$4,660,000	1	n/a
Santa Clara Valley Open Space Authority	$4,633,500	6	n/a
Sempervirens Fund	$2,445,990	4	16%
Save the Redwoods League	$2,000,000	1	4%
Wildlife Heritage Foundation	$869,040	1	18%
The Conservation Fund a Nonprofit Corporation	$500,000	1	0%
Green Foothills Foundation dba Green Foothills	$413,750	3	13%
The Trust for Public Land	$300,000	1	0%
Sonoma Land Trust	$300,000	1	n/a
Committee for Green Foothills Action	$285,455	3	n/a

Show all 39 grantees

All grantees of Peninsula Open Space Trust by total granted
Grantee	Total granted	Years	Share of their budget
City of San Jose	$4,660,000	1	n/a
Santa Clara Valley Open Space Authority	$4,633,500	6	n/a
Sempervirens Fund	$2,445,990	4	16%
Save the Redwoods League	$2,000,000	1	4%
Wildlife Heritage Foundation	$869,040	1	18%
The Conservation Fund a Nonprofit Corporation	$500,000	1	0%
Green Foothills Foundation dba Green Foothills	$413,750	3	13%
The Trust for Public Land	$300,000	1	0%
Sonoma Land Trust	$300,000	1	n/a
Committee for Green Foothills Action	$285,455	3	n/a
Amah Mutsun Land Trust	$265,243	6	3%
California Association of Resource Conservation Districts	$225,250	3	4%
Climate Resilient Communities	$202,500	3	6%
La Honda Educational Foundation	$163,457	4	n/a
California Council of Land Trusts	$147,675	7	10%
Coastside Land Trust	$90,000	3	2%
Together Bay Area	$85,000	5	5%
Puente de la Costa Sur	$40,000	6	0%
Epacenter	$40,000	2	1%
Multiplier	$37,500	6	0%
Regents of the University of California	$33,000	1	n/a
Saved by Nature	$33,000	3	5%
Golden Gate National Parks Conservancy	$30,000	2	0%
Muwekma Ohlone Tribe Inc	$22,500	1	3%
Pie Ranch	$21,000	4	0%
Canopy	$20,500	2	1%
San Mateo County Parks and Recreation Foundation	$20,000	2	3%
Nuestra Casa de East Palo Alto	$20,000	2	1%
Pescadero Education Foundation	$19,500	3	6%
Land Trust of Santa Cruz County	$19,136	1	0%
San Benito Agricultural Land Trust	$15,700	2	2%
University of California Davis	$15,000	1	n/a
Muwekma Ohlone Preservation Foundation	$13,837	1	n/a
Kitchen Table Advisors	$10,000	1	n/a
Coastal Quest	$10,000	1	n/a
Resource Conservation District of Monterey County	$8,100	1	n/a
Silicon Valley Bicycle Coalition	$5,000	1	0%
Chopsticks Alley Art	$5,000	1	2%
Land Trust Alliance Inc	$5,000	1	0%

Plus 7 recipients with no EIN on record ($14M), not named here.

Each grantee by its size and the share of its budget Peninsula Open Space Trust supplied at peak.

Tap a dot to name the grantee.

How this is measured

Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 28.

Nonprofits that may fit its grantmaking

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

The David and Lucile Packard FoundationCA33.8× affinity15 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The David and Lucile Packard Foundation · Silicon Valley Community Foundation · Resources Legacy Fund · Gordon E and Betty I Moore Foundation · Sand Hill Foundation · Tomkat Ranch Educational Foundation · The San Francisco Foundation · Atkinson Foundation · Bothin Foundation · Patagoniaorg · Community Foundation Santa Cruz County · The Keith Campbell Foundation for the Environment Inc

How this is measured

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Peninsula Open Space Trust with peer funders

About Peninsula Open Space Trust

How much does Peninsula Open Space Trust give?: Peninsula Open Space Trust reported 24 itemized grants totaling $6,466,125, out of $9,209,125 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 7 and 20 organizations a year over FY2017 to FY2024.
What does Peninsula Open Space Trust fund?: By grant dollars over FY2017 to FY2025, its largest causes are Environment (58%), Recreation & Sports (16%), Public Benefit (14%).
Who are Peninsula Open Space Trust's largest grantees?: By total granted over FY2017 to FY2025: City of San Jose ($4.7M), Santa Clara Valley Open Space Authority ($4.6M), Sempervirens Fund ($2.4M).
Does Peninsula Open Space Trust fund new organizations?: In FY2024, 40% of the organizations it funded were first-time grantees.
Which funders back the same organizations as Peninsula Open Space Trust?: Its strongest co-funders, measured against what their size predicts, include The David and Lucile Packard Foundation, Silicon Valley Community Foundation, Resources Legacy Fund.
Where is Peninsula Open Space Trust based?: Peninsula Open Space Trust is based in CA.