Cannabis Regulations in San Mateo County, CA (2026)

Cal. Health & Safety Code Sec. 11362.2 (Personal Cannabis Cultivation Limits and Local Authority)

11362.2. (a) Personal cultivation of cannabis under paragraph (3) of subdivision (a) of Section 11362.1 is subject to the following restrictions: (1) A person shall plant, cultivate, harvest, dry, or process plants in accordance with local ordinances, if any, adopted in accordance with subdivision (b). (2) The living plants and any cannabis produced by the plants in excess of 28.5 grams are kep...

San Mateo County Ordinance Code § 5.148.050(a)-(b)

(a)Only Licenses for Mixed-Light Cultivation of Cannabis and Mixed-Light Nursery Cultivation of Cannabis will be issued by the County. The County shall only issue such Licenses for (1) lands designated as "Agriculture" by the County General Plan Land Use Map, and (2) other lands where commercial agricultural use has been conducted for the three (3) years preceding the effective date of this Ord...

San Mateo County Code § 5.148.160(e)

All Premises shall also be setback a minimum of 600 feet from any school providing education to K-12 grades, licensed day care center, youth center or playground as defined by California Health and Safety Code Section 11353.1, and alcohol or drug treatment facility as defined by California Health and Safety Code Section 11834.02 in existence at the time the License is issued. The 600-foot dista...