Generally, parcel zoned “AP” or Agricultural Preserve are in Williamson Act Contract, but not always. Call the Planning Department to inquire. The purpose of the AP zone is to provide land use regulations consistent with the intent of the Plumas County Williamson Act program for agricultural preserves. The Williamson Act, also known as the California Land Conservation Act of 1965, 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. In return, landowners receive property tax assessments which are much lower than normal because they are based upon farming and open space uses as opposed to full market value.