Howard L. Greenhouse Large Grant Program
Funding Amount
US $25,000 - US $250,000
Deadline
Rolling / Open
Grant Type
Foundation
Deadline history & next window
- Cycle
- One-time opportunity
- Tracked since
- April 2026
From the program guidelines: “Grants made in this cycle should be considered one-time grant opportunities and may not have the opportunity to apply for renewal.”
Can we apply?
Check your organization against each line. Taken from the listing; confirm with the funder's guidelines.
Required status
- Tax-exempt status
Other requirements
- This includes the following areas: Garrisonville, Quantico, Triangle, Dumfries, Manassas, Dale City, Lake Ridge, Woodbridge, Lorton, Occoquan, Aquia
Not eligible / not funded
- Not eligible: Programs not directly related to health
- Not eligible: Those primarily serving religious organizations
- Not eligible: The following:programs not directly related to health
- Not eligible: Fundraising events
- Not eligible: Sponsorships
- Not eligible: Direct support to individuals
- Not eligible: Programs exclusively serving religious or sectarian organizations
- Not eligible: Programs funded by other sources where PHF grants would supplant funding
- Not eligible: Debt retirement
- Not eligible: Programs without diverse funding sources
- Not eligible: Scientific research
- Not eligible: Indirect costs or percentages
Overview
The Howard L. Greenhouse Large Grant Program, offered by Potomac Health Foundation, provides one-time project-based grants for the 2025-2026 cycle. The focus areas include community wellness, behavioral healthcare, oral healthcare, and capacity building for nonprofits. Eligible organizations must be tax-exempt and serve specific communities in eastern Prince William County, VA. Grants will not support programs not directly related to health or those primarily serving religious organizations.
NOTE: For the 2026-2027 Howard L. Greenhouse Large Grant Program, Potomac Health Foundation will offer project-based grants.
Grants made in this cycle should be considered one-time grant opportunities and may not have the opportunity to apply for renewal.
Funding Focus Areas:
Community Wellness Programs: Evidence-based programs aimed at improving population health.Behavioral Healthcare: Programs addressing behavioral health and substance abuse.Oral Healthcare: Services for vulnerable and underserved populations.Primary Healthcare Clinics: Investment in clinics within PHF service areas to assess availability and impact.Access to Prescription Medications: Initiatives to increase access to medications for underserved populations.Food Programs: Projects providing fresh, nutritious food to underserved areas (e.g., distribution hubs, storage, community gardens). Health Insurance Assistance: Support with accessing Medicaid and other health insurance programs affected by post-COVID government cutbacks.**Capacity Building: Projects that strengthen the organizational capacity of nonprofits, including strategic planning, board development, hiring consultants, IT/technology, training, and staff development.
Eligibility
PHF only accepts applications from tax-exempt organizations that serve the people of eastern Prince William County, VA, and adjacent communities in southeastern Fairfax and north Stafford counties.This includes the following areas: Garrisonville, Quantico, Triangle, Dumfries, Manassas, Dale City, Lake Ridge, Woodbridge, Lorton, Occoquan, Aquia
Ineligibility
PHF does not fund the following:programs not directly related to health;Fundraising events or sponsorships Direct support to individuals Programs exclusively serving religious or sectarian organizations Programs funded by other sources where PHF grants would supplant fundingWhat Potomac Health Foundation actually gave
Source: IRS Form 990-PF, 2024
- Grants in 2024
- 55
- Total given
- $5.87M
- Median grant
- $84K
- Range
- $15K–$500K
- By dollars: Virginia 89%, District of Columbia 11%. Top recipient cities: Woodbridge, VA; Washington, DC; Manassas, VA.
- 35% of grants with a stated purpose were for general or operating support.
- 15% of recipients were new grantees, not repeat recipients.
Example grants
Prince William County Community Services · Manassas, VA
Crisis receiving and stabilization center
$500K
Northern Virginia Family Service · Oakton, VA
Public health benefits & insurance navigation ($25,343); operating support ($227,500)
$253K
Action in Community Through Service Inc · Dumfries, VA
Operating support
$250K
Pathway Homes · Fairfax, VA
Operating support
$250K
The Arc of Greater Prince William · Dale City, VA
Operating support
$250K
Focus Areas & Funding Uses
Fields of Work
- Nonprofits
- Healthcare
- Community health
- Mental health
- Dental health
- Capacity building
Categories
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