Cannabis Regulations in San Mateo, CA (2026)
1 verified cannabis regulations for San Mateo, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Home Cultivation
San Mateo adopted Ordinance 2017-4 adding Chapter 7.45 to prohibit outdoor cannabis cultivation within city limits. Indoor cultivation of up to six plants per residence is protected under Proposition 64 (CA H&S Code Section 11362.2). Plants must be in a locked space not visible from public areas.
San Mateo Home Cannabis Cultivation Rules
Significant RestrictionsCal. Health & Safety Code Sec. 11362.2 (Personal Cannabis Cultivation — 6 Plant Limit)
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...
Looking for San Mateo County county-wide rules?
County ordinances apply to unincorporated areas and may supplement San Mateo city rules.
Cannabis Regulations in San Mateo County →