Sonoma, CA Cannabis Regulations: Buffer Zones (2026)

50 SPECIAL USE STANDARDS, permits outdoor personal cultivation only under a strict set of conditions, and the buffer rule in subsection (B)(6) is one of the toughest: the parcel where cannabis is grown outdoors cannot sit within 600 feet of a school, church, park, library, fairgrounds, child care center, or youth-oriented facility, defined broadly to include things like a boys or girls club, a soccer field, a little league field, an amusement park, or a community swimming facility, and cannot sit within 600 feet of the boundary of any incorporated city.

That distance is measured in a straight line from the fence or enclosure around the grow area to the nearest boundary of the protected use. The buffer applies on top of other outdoor cultivation limits in the same section: no more than three plants on 50 square feet total per parcel, cultivation confined to the rear yard set back at least 10 feet from all property lines, a solid screening fence blocking any view from the street or neighboring parcels, and written, dated consent from every property owner renewed every 12 months.

Subsection (B)(10) goes further than a simple prohibition: it declares outdoor cultivation that does not comply with every standard in the section to be 'unlawful, a public nuisance and a violation of this code,' and subsection (B)(11) lists specific nuisance triggers, including disturbing odors, repeated calls to enforcement officers, disrupted traffic flow, or excessive noise, any of which can support a separate nuisance finding regardless of the buffer distance. Indoor cultivation under subsection (A) is not subject to the 600-foot buffer, but it is confined to a fully enclosed structure or residence and capped at six plants per residence under subsection (8).