2 county-level rules, plus city-specific rules for 1 city in San Mateo County, California.
Verified from official government sources
Unincorporated San Mateo County allows adults 21+ to cultivate up to 6 cannabis plants per residence for personal, non-medical use under County Code Chapter 5.148 (Personal Cultivation). Cultivation must occur inside a private residence or a fully enclosed and secure accessory structure — OUTDOOR personal cultivation is PROHIBITED in unincorporated San Mateo County, going further than state law's baseline. Qualified medical patients may also cultivate indoors. Sale or commercial distribution requires a commercial cannabis license, which the County does NOT issue for retail activities.
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...
Cannabis retail dispensaries are PROHIBITED in unincorporated San Mateo County. The Board of Supervisors has adopted a ban on all commercial cannabis retail licenses under MAUCRSA. Limited commercial cultivation (mixed-light greenhouse and nursery) is allowed only on parcels designated Agriculture in the General Plan with a County commercial cannabis license. Delivery from licensed operators in other jurisdictions into unincorporated areas is permitted per state law (Bus & Prof Code §26090) and cannot be banned locally.
1 cities in San Mateo County have their own cannabis regulations rules. Each link goes to that city's dedicated page with code citations.
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