In the fall, for Environmental grants, Marbrook Foundation has an invitation-only Letter-of-Intent (LOI) and application process and does not accept unsolicited letters of inquiry or proposals. We are proactive at seeking new funding partnerships and appreciate your respect of our process.

What we fund:

Marbrook Foundation will support programs or projects focused on building sustainable momentum for environmental issues in the most comprehensive ways possible. We believe in improving environmental issues using approaches that both empower and centralize the voices of those most affected by environmental degradation. Projects may include multiple approaches, for instance: inter-sectional organizing efforts, grassroots organizing, changing the culture around environmental issues, economic system restructuring, environmental education, and environmental policy and justice work. Funding will go to organizations based in Minnesota and in states where Brooks family members live.


BY INVITATION-ONLY. Please submit a letter of intent (LOI) online by July 15th at 11:59 pm CST. Invitations for full applications will be sent in early August and full applications will be due online on September 1st at 11:59 pm CST. LOI and Application must be submitted online via the Foundation’s online grant application system under ‘How To Apply’. Minimum grant size is $20,000.

Environmental Funding Guidelines:

The Foundation will consider LOIs and applications submitted by invitation-only

The Foundation will consider applications for:

  • 501(c)(3) charitable and fiscally sponsored organizations
  • Capital campaigns
  • Multi-year grants
  • General operating grants
  • The Foundation accepts no more than one proposal per year from each organization
  • After five consecutive years of giving to an organization, Marbrook will cease making grants to the organization for at least one year, per the Foundation’s phase-out policy