Photo: Midpeninsula Regional Open Space District

Members & Supporters


The Bay Area Open Space Council is a unique regional network of non-profit organizations, public agencies, businesses, and individuals working across the 10-county greater Bay Area to conserve, steward, and promote the Bay Area’s world-class natural and working lands. Our Members and Supporters come together through our regular programming to share ideas, forge partnerships, and create a stronger community in support of a regional land conservation vision.

Organization Members & Supporters


Member Photo Strip

  • Organization Members – Organizations and agencies who acquire, manage, and provide resources to land.
  • Organization Supporters – Nonprofit organizations who provide services to, connect people to, advocate for, and otherwise support the protection of land.

Organization Member & Supporter Dues

Under $100,000$250
$2,500,001 and more$5,000

Join Here


Alameda County Resource Conservation District

Amah Mutsun Land Trust

Bay Area Ridge Trail Council

California Rangeland Trust

California State Coastal Conservancy

California State Parks

City of American Canyon

City of San Francisco

City of San Jose

City of San Ramon

City of Walnut Creek

Coastside Land Trust

The Conservation Fund

East Bay Municipal Utility District

East Bay Regional Park District

East Contra Costa County Habitat Conservancy

Golden Gate National Parks Conservancy

Jasper Ridge Biological Preserve, Stanford University

John Muir Land Trust

Land Trust of Santa Cruz County


Livermore Area Recreation and Park District

Mare Island Heritage Trust

Marin Agricultural Land Trust

Marin County Parks

Marin Municipal Water District

Marin Open Space Trust

Midpeninsula Regional Open Space District

Napa County Regional Park and Open Space District

National Park Service

The Nature Conservancy

Pacifica Land Trust

Peninsula Open Space Trust

Pepperwood Preserve

Resource Conservation District of Santa Cruz County

San Francisco Bay Trail Project

San Francisco Public Utilities Commission

San Mateo County Parks

San Mateo County Resource Conservation District

Santa Clara Valley Open Space Authority

Santa Clara County Parks

Santa Clara Valley Habitat Agency

Santa Clara Valley Water District

Save Mount Diablo

Save the Redwoods League

Sempervirens Fund

Silicon Valley Land Conservancy

Solano Land Trust

Solano Open Space

Sonoma County Agricultural Preservation and Open Space District

Sonoma County Regional Parks

Sonoma County Water Agency

Sonoma Land Trust

Sonoma Resource Conservation District

Tri-Valley Conservancy

Trust for Public Land


Business Supporters


Any business that supports the Bay Area Open Space Council’s mission is eligible and welcome to join. This may include companies and consultants that work across a wide range of disciplines, such as environmental planning, architecture, lobbying, law, and outdoor recreation.

Business Supporter Dues

1 Supporter$500
2 Supporters$1,000
3-5 Supporters$2,000
6-9 Supporters$4,000
10+ Supporters$5,000

Business Supporter dues levels correspond with the number of employees who can attend any one of our events at the free or discounted member rate. Benefits don’t have to be associated with a particular employee.

Join Here


Business Supporters

Individual Supporters


Any individual who donates $250 or more becomes can become an Individual Supporter. Those who may find this program most useful are consultants working in the area of land conservation, retired professionals who spent their career working in the sector, as well as individuals passionate about Bay Area lands.

Young Professional Supporters


Access to our programs for young professionals interested in a land conservation career is important to us. Young professionals who are interested in entering into the field or have been working in the field for three years or less are welcome to join at the discounted rate.

Prefer to send a check?

Send it to:

Bay Area Open Space Council
c/o Membership
2150 Allston Way, Suite 320
Berkeley, CA 94704


Annie Burke at [email protected]

Thank you, Members and Supporters!

Every fall we invite organizations and agencies to renew their membership or join our growing coalition. We’d like to share our gratitude from the roof tops but there isn’t one high enough in the Bay Area from where everyone could hear us. So we go to the internet. Check out our great members and supporters and get engaged with their work. They’re doing some important stuff.



In 2015 we shared postcards across social media showing our members and supporters make the Bay Area GREAT! Check out #BayAreaOpenSpace, and see them all on Facebook and Flickr.



In 2014 we thanked our members with Quiz Shows on Fridays. Check out #OSCQuizFridays on Twitter and Instagram. See them all on Flickr.



In 2013 we were all over the Bay Area map thanking our members and supporters. Find our gratitude on Flickr and Instagram.



In 2012 we used pictures and words to thank our members with Fotobabble.



In 2011 we had fun with pictures, all of which you can see on Flickr.

From the blog