Williamson Act

Biennial Review Reporting

• Mariposa County Williamson Act lands are required to report the agricultural operations on a biennial basis
• The Biennial Review Reporting requirement started in the years 2011-2012
• The Biennial Review Report forms are mailed out at the end of November on even numbered years to Williamson Act land owners
• Current Biennial Review Reporting forms will be posted here when they are available
• The most recent Biennial Review reporting form: 2021-2022 Biennial Reporting Form (PDF)

If you have any questions about the Biennial Review Reporting requirements please contact us at 209-966-5151.

County Information

• Final Adopted Resolution approving County Policy Amendment 2005-230, County-wide Williamson Act (Land Conservation Act) Amendments (PDF)
• History - Williamson Act (Land Conservation Act) Amendments

State Information

The California Land Conservation Act of 1965-commonly referred to as the Williamson Act-enables local governments to enter into contracts with private landowners for the purpose of restricting specific parcels of land to agricultural or related open space use.

• The California State Department of Conservation