Parcels that are regulated under the Williamson Act. The purposes of the Land Conservation Act (Williamson Act) are to preserve the County’s prime soils and intensive high value agricultural operations, and to discourage premature and unnecessary conversion of agricultural land to urban use.

Location of Scenic Corridors in San Mateo County. Scenic Corridors are defined as: public views within and from Scenic Corridors shall be protected and enhanced, and development shall not be allowed to significantly obscure, detract from, or negatively affect the quality of these views. Vegetative screening or setbacks may be used to mitigate such impacts. Development visible from Scenic Corridors shall be so located and designed as to minimize interference with ridgeline silhouettes.