Williamson Act- Farmland Security Zone
What is a farmland security zone?
A farmland security zone is an area created within an agricultural preserve* by a board of supervisors (board) upon request by a landowner or group of landowners.
* An agricultural preserve defines the boundary of an area within which a city or county will enter into Williamson Act contracts with landowners. The boundary is designated by resolution of the board or city council having jurisdiction. Agricultural preserves must generally be at least 100 acres in size.
What new benefits do farmland security zone contracts offer to landowners?
Farmland security zones offer landowners greater property tax reduction. Land restricted by a farmland security zone contract is valued for property assessment purposes at 65% of its Williamson Act valuation, or 65% of its Proposition 13 valuation, whichever is lower.
New special taxes for urban-related services must be levied at an unspecified reduced rate unless the tax directly benefits the land or living improvements. Cities and special districts that provide non-agricultural services are generally prohibited from annexing land enrolled under a farmland security zone contract. Lastly, school districts are prohibited from taking farmland security zone lands for school facilities.

Contact Williamson Act- Farmland Security Zone

California Department of Conservation
801 “K” Street MS 18-01
Sacramento, California  95814
Phone: 916-324-0850
Fax: 916-327-3430


Service Area

Statewide Program in:
  • California

Office Locaters

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