Our Roots

In 1990, Sonoma County residents created the Sonoma County Agricultural Preservation and Open Space District to permanently protect the greenbelts, scenic viewsheds, farms and ranches and natural areas of Sonoma County.

Situated on the northern edge of the rapidly urbanizing Bay Area, and facing the loss of the natural and agricultural landscapes that define the county’s rural character, the visionary voters of Sonoma County recognized the need for proactive local funding for agricultural and open space protection.

Sonoma County voters approved Measures A and C to create Ag + Open Space and enable a quarter-cent sales tax to fund Ag + Open Space operations until 2011. In 2006, with 76% of the vote, Sonoma County residents approved Measure F to extend the quarter-cent sales tax through 2031.

As one of the first organizations in the country established to protect both agricultural and open space lands, Ag + Open Space has protected over 111,000 acres to benefit people and wildlife.

Read more about some of our greatest achievements over the years.