Since 1942, The Rockfall Foundation has provided subsidized office space in the deKoven House to a variety of nonprofit service groups, creating a hub for environmental organizations and their staffs and volunteers. In addition to being the home of The Rockfall Foundation, these organizations currently also have offices at deKoven House:
- Artists for World Peace
Artists for World Peace raises funds through making art to support grass-roots organizations in communities around the world.
- Connecticut Association of Conservation and Inland Wetlands Commission
To promote the statutory responsibilities of Connecticut Conservation Commissions and Inland Wetland Commissions and to foster environmental quality through education and through the conservation and protection of wetlands and other natural resources.
- Connecticut Center for Spiritual Living
Knowing the deepest truth of being, that all people are individualized expressions of the One Life, we see beauty within all creation.
- Connecticut Land Conservation Council
The Connecticut Land Conservation Council advocates for land conservation, stewardship and funding, and works to ensure the long term strength and viability of the land conservation community.
- Connecticut River Coastal Conservation District
To promote the sound use and management of our natural resources through technical assistance and education.
- Connecticut River Conservancy
The Connecticut River Watershed Council works to protect the watershed from source to sea.
- Mattabeseck Audubon Society
The Mattabeseck Audubon Society, a chapter of the National Audubon Society, is committed to environmental leadership and education for the benefit of the community and the earth’s biodiversity.
- Middlesex Land Trust
To promote for the benefit of the general public the preservation of natural resources principally in, but not limited to, the county of Middlesex.