TLDR
California foundation grantmaking is concentrated in a handful of large private and community foundations — Hewlett, Packard, Irvine, California Wellness, California Endowment, California Community Foundation, Silicon Valley Community Foundation, Weingart, Heising-Simons, and the Conrad N. Hilton Foundation collectively distribute several billion dollars annually. Most fund California-headquartered nonprofits with clear program focus areas. Cold applications are rare. Almost every grant starts with a letter of inquiry or a relationship developed over time.
William and Flora Hewlett Foundation
One of the largest private foundations in the United States, headquartered in Menlo Park. Funds education, environment, performing arts, U.S. democracy, global development, and effective philanthropy.
Pros
- ✓ Multi-year general operating support is standard for grantees
- ✓ Transparent guidelines and program officer access
- ✓ Funds at scale — typical grants range from $50,000 to several million
Cons
- × Highly selective; concentrated in established organizations within program areas
- × Limited open-application opportunities — most grantees come through staff identification
- × California-focused work primarily through specific program areas, not state-wide
Pricing: Grants typically $50,000 – $5,000,000
Verdict: Approach by aligning carefully with one of Hewlett's program areas; cold proposals rarely advance.
David and Lucile Packard Foundation
Los Altos-based private foundation funding conservation and science, children, families, and communities, and population and reproductive health.
Pros
- ✓ Strong support for organizational effectiveness — capacity-building grants common
- ✓ Clear program areas and explicit California priorities in children/families work
- ✓ Multi-year commitments typical for established grantees
Cons
- × Most grants are by invitation; LOIs accepted only in selected programs
- × Program priorities shift on multi-year cycles — check current strategy
- × Limited responsiveness to unsolicited proposals
Pricing: Grants typically $50,000 – $2,000,000
Verdict: Best entry point is the children, families, and communities program if your work focuses on California's San Joaquin Valley or Bay Area.
James Irvine Foundation
San Francisco-based statewide funder focused on expanding economic and political opportunity for Californians, with emphasis on workforce development and protecting democratic processes.
Pros
- ✓ Explicit California-only mandate — every dollar goes to California work
- ✓ Open LOI process for the Better Careers and Priority Communities portfolios
- ✓ Strong commitment to BIPOC-led organizations and rural California
Cons
- × Tightly defined strategy areas — outside the focus, no funding regardless of merit
- × Competitive — 5,000+ inquiries per year
- × Smaller pre-determined geography for some portfolios
Pricing: Grants typically $100,000 – $1,000,000
Verdict: If your work fits Better Careers, Priority Communities, or Fair Government, Irvine is one of California's most accessible large funders.
California Wellness Foundation
Statewide health funder with $1.1 billion in assets, supporting policy advocacy, capacity building, and direct services for low-income communities, communities of color, and rural areas.
Pros
- ✓ Strong support for general operating grants and BIPOC-led organizations
- ✓ Open LOI process — published quarterly review cycles
- ✓ Multi-year unrestricted funding common
Cons
- × Health-focused, broadly defined but still bounded
- × No funding for individuals or for-profit ventures
- × Limited support outside California
Pricing: Grants typically $50,000 – $400,000
Verdict: One of the most accessible large California foundations for community-rooted health work; competitive but procedurally fair.
The California Endowment
Los Angeles-based private health foundation with $4 billion in assets, focused on improving health and well-being in California communities through advocacy, policy change, and place-based investment.
Pros
- ✓ Major commitment to long-term place-based work in 14 Building Healthy Communities sites
- ✓ Funds policy advocacy explicitly — uncommon for health foundations
- ✓ Substantial multi-year commitments to anchor grantees
Cons
- × Place-based focus narrows geographic eligibility for most strategies
- × Highly relationship-driven; hard to enter as a new organization
- × Large grants concentrated in established intermediaries
Pricing: Grants typically $100,000 – $5,000,000
Verdict: Most accessible if your work is in one of the 14 Building Healthy Communities sites; otherwise consider intermediary partners.
California Community Foundation
Los Angeles County's community foundation with $2.5 billion in assets, supporting nonprofits across LA County through donor-advised funds, scholarships, and competitive grant programs.
Pros
- ✓ Open competitive grant cycles for nonprofits serving LA County
- ✓ Donor-advised fund recommendations create high additional opportunity
- ✓ Strong technical assistance and capacity-building programs
Cons
- × Geographic restriction to LA County for most programs
- × Smaller individual grant sizes than statewide foundations
- × Highly competitive within LA's dense nonprofit market
Pricing: Grants typically $10,000 – $250,000
Verdict: Essential funder for any LA County–based nonprofit; build a relationship with a program officer regardless of immediate funding need.
Silicon Valley Community Foundation
Mountain View-based community foundation, the largest community foundation by assets in the U.S., serving San Mateo and Santa Clara counties with grantmaking and donor services.
Pros
- ✓ Strong support for Bay Area nonprofits across program areas
- ✓ Discretionary and donor-advised fund grants represent largest source
- ✓ Initiative-based grantmaking on housing, economic security, and immigrant integration
Cons
- × Geographic focus limits eligibility to SF Peninsula and South Bay
- × Most grants flow through donor-advised funds — relationship-driven
- × Initiative grants competitive and time-bounded
Pricing: Grants typically $25,000 – $500,000
Verdict: Critical funder for any Peninsula or Silicon Valley nonprofit; the donor-advised fund channel is often the largest grant source.
Weingart Foundation
Los Angeles-based private foundation focused on equity in Southern California, with strong commitments to capacity building, general operating support, and BIPOC-led organizations.
Pros
- ✓ General operating support is the default — capacity-building emphasis
- ✓ Open application cycles with published deadlines
- ✓ Explicit racial equity lens applied across all grantmaking
Cons
- × Geographic focus on Southern California (LA, Orange, Riverside, San Bernardino, Ventura)
- × Substantial review process — 4–6 months from application to decision
- × Newer organizations need fiscal sponsorship for capacity-building grants
Pricing: Grants typically $50,000 – $300,000
Verdict: The most accessible large general-operating funder in Southern California; strong fit for equity-focused organizations.
Heising-Simons Foundation
Los Altos-based private foundation funding science, climate, education, and human rights, with significant grantmaking in California early childhood education.
Pros
- ✓ Explicit support for early childhood and pre-K policy work in California
- ✓ Multi-year operating grants standard for established grantees
- ✓ Strong climate and science portfolios with California beneficiary work
Cons
- × Tightly bounded program areas; no funding outside strategy
- × Most grants by invitation rather than open application
- × Concentrated grantee list — hard to enter without prior relationship
Pricing: Grants typically $100,000 – $1,500,000
Verdict: Strong fit for California early childhood and climate organizations with established track records.
Conrad N. Hilton Foundation
Agoura Hills-based private foundation funding homelessness, foster care, hospitality workforce development, Catholic sisters, and global initiatives, with significant California focus.
Pros
- ✓ Major commitment to chronic homelessness and transition-aged foster youth in LA County
- ✓ Multi-year strategic grants for anchor partners
- ✓ Hilton Humanitarian Prize — $2.5 million annual award
Cons
- × Tightly defined program areas with named lead grantees
- × Most California funding flows to homelessness and foster care work in LA
- × New entrants typically need to align with named strategy partners
Pricing: Grants typically $250,000 – $5,000,000
Verdict: Essential funder for LA homelessness and foster care work; harder to enter outside those program areas.
California’s foundation landscape is the most concentrated in the country. A small number of large private foundations and community foundations distribute the majority of foundation dollars in the state. The Urban Institute counts roughly 192,000 active California nonprofits, and Candid’s foundation stats put California foundation grantmaking around $14.5 billion in 2022.
This guide covers ten foundations that fund California nonprofits in volume, with eligibility, application process, and typical grant ranges. It is not a comprehensive list — California has thousands of active grantmakers — but starting with these ten gives most organizations a working map of the state’s largest grant capital.
For broader context on California nonprofit operations, see the California state page. For formation specifics, see the California nonprofit startup guide.
How California Foundation Funding Works
Three structural points worth understanding before you apply anywhere:
- Cold applications rarely advance. Most California foundations rely on staff identification, peer referrals, and existing grantee networks. The exceptions — Weingart, California Wellness, James Irvine — publish open application processes, but even these reward organizations that have built relationships before applying.
- Letters of inquiry are the standard entry point. A 2–3 page LOI describing your organization, the proposed work, and the funding request comes first. Full proposals come only by invitation.
- Community foundations distribute through donor-advised funds. California Community Foundation and Silicon Valley Community Foundation each manage thousands of donor-advised funds. Most grants come from individual donors recommending nonprofits to foundation staff, not from competitive grant programs.
1. William and Flora Hewlett Foundation
Headquartered in Menlo Park. The Hewlett Foundation funds education, environment, performing arts, U.S. democracy, global development, and effective philanthropy. 2023 grantmaking totaled approximately $580 million, per the foundation’s annual report.
Application: Most grants are by program-officer initiative. The foundation accepts very limited unsolicited proposals. The path in is alignment with one of the program strategies, which the foundation publishes in detail at hewlett.org.
Typical grant size: $50,000 to $5 million, multi-year general operating support common.
Best fit: Established California organizations whose work directly aligns with a Hewlett program strategy.
2. David and Lucile Packard Foundation
Los Altos-based, with three program areas: conservation and science, children/families/communities, and population and reproductive health.
Application: LOIs accepted in select programs; many grants by invitation. The Children, Families, and Communities program has the most California-focused grantmaking, with priorities in early learning, children’s health, and community engagement, particularly in the San Joaquin Valley and Bay Area.
Typical grant size: $50,000 to $2 million.
3. James Irvine Foundation
San Francisco-based and California-focused. Every grant the Irvine Foundation makes funds work in California. The current strategy centers on the Better Careers (workforce development), Priority Communities (place-based), Fair Government, and Arts portfolios.
Application: LOIs accepted for Better Careers and Priority Communities portfolios. The foundation publishes deadlines and review cycles transparently.
Typical grant size: $100,000 to $1 million.
4. California Wellness Foundation
Statewide health funder. Calwellness publishes a quarterly LOI cycle and is one of the most procedurally accessible large California foundations.
Application: Online LOI form, reviewed quarterly. Decisions typically within 4 months of LOI submission.
Typical grant size: $50,000 to $400,000, with strong emphasis on general operating support and BIPOC-led organizations.
5. The California Endowment
LA-based private health foundation with about $4 billion in assets. Major commitment to 14 Building Healthy Communities sites across California — long-term, place-based investments in specific cities and neighborhoods.
Application: Place-based work routes through community partner organizations in each BHC site. Statewide policy and advocacy grants are by invitation.
Typical grant size: $100,000 to $5 million.
6. California Community Foundation
LA County’s community foundation, with about $2.5 billion in assets. Distributes grants through both competitive programs and donor-advised funds. The CCF discretionary grants for LA County nonprofits are open and competitive.
Application: Online application for competitive cycles; donor-advised fund grants flow through individual donor recommendations.
Typical grant size: $10,000 to $250,000.
7. Silicon Valley Community Foundation
Mountain View-based community foundation, the largest in the U.S. by assets. Serves San Mateo and Santa Clara counties.
Application: Initiative-based grants on housing, economic security, and immigrant integration; donor-advised fund grants flow through individual donor recommendations.
Typical grant size: $25,000 to $500,000.
8. Weingart Foundation
LA-based private foundation focused on equity in Southern California (LA, Orange, Riverside, San Bernardino, Ventura counties). Default grant type is unrestricted general operating support, with explicit racial equity lens.
Application: Open application cycles with published deadlines.
Typical grant size: $50,000 to $300,000.
9. Heising-Simons Foundation
Los Altos-based, with programs in science, climate, education (especially early childhood), and human rights. Significant California early childhood and pre-K policy grantmaking.
Application: Most grants by invitation. Some programs accept LOIs.
Typical grant size: $100,000 to $1.5 million.
10. Conrad N. Hilton Foundation
Agoura Hills-based, with major commitments to chronic homelessness and transition-aged foster youth in LA County, hospitality workforce development, Catholic sisters, and global initiatives.
Application: Most California funding flows to named anchor partners in homelessness and foster care work.
Typical grant size: $250,000 to $5 million.
How to Build a California Grant Pipeline
A working California grant strategy combines:
- 3–5 anchor relationships with foundations whose strategy directly aligns with your work
- Open application cycles at Weingart, California Wellness, Irvine, and your local community foundation
- DAF cultivation through community foundation program officers who advise individual donors
- State agency grants for organizations whose work fits state priorities (separate from foundation funding)
Tracking applications, LOIs, deadlines, and reporting requirements across this pipeline is where most organizations break down. Spreadsheets work for the first 3–5 grants and start to crack at 10. A purpose-built grant management system that ties applications to restricted fund balances and reporting deadlines — what GrantPipe is built for — replaces the brittle spreadsheet by year two.
For grant management software comparisons, see the California grant management software guide.
Frequently Asked Questions
(See structured FAQs above.)
Start a free trial to track California foundation applications alongside restricted fund balances and reporting deadlines.
Free resource
Get the Nonprofit CRM Evaluation Scorecard
A weighted scoring framework for comparing nonprofit CRMs across the 8 categories that matter most to mid-sized organizations: donor management, grant tracking, reporting, integrations, and total cost. Delivered by email.
Source: William and Flora Hewlett Foundation 2023 Annual Report
Source: Urban Institute National Center for Charitable Statistics, 2023
| Foundation | Geography | Typical grant | Application channel |
|---|---|---|---|
| Hewlett | California + national/global | $50K–$5M | Program officer outreach |
| Packard | California focus areas | $50K–$2M | By invitation; selective LOIs |
| James Irvine | California only | $100K–$1M | Open LOI for select portfolios |
| California Wellness | California only | $50K–$400K | Open LOI quarterly |
| California Endowment | 14 BHC sites + state | $100K–$5M | Place-based intermediaries |
| California Community Foundation | LA County | $10K–$250K | Open competitive cycles |
| Silicon Valley CF | SF Peninsula + South Bay | $25K–$500K | Initiatives + DAF |
| Weingart | Southern California | $50K–$300K | Open application |
| Heising-Simons | California focus areas | $100K–$1.5M | By invitation |
| Hilton | LA + global | $250K–$5M | Strategic anchor partners |
Q&A
Which California foundation funds the most nonprofits?
By number of grants, the California Community Foundation and Silicon Valley Community Foundation lead, distributing thousands of grants annually through donor-advised funds. By dollars granted, the William and Flora Hewlett Foundation and David and Lucile Packard Foundation are typically the largest California-headquartered private foundations.
Q&A
Are California state grants different from foundation grants?
Yes. State grants are administered by California state agencies (CDPH, CDE, HCD, others) and are funded through the state budget. Foundation grants come from private foundations and community foundations. State grants typically have more rigid compliance and reporting; foundation grants are more variable but often more flexible.
Frequently asked