Vista, CA Cannabis Regulations: Buffer Zones (2026)

090 of the Vista Municipal Code, enacted by Measure Z on December 11, 2018, layers two distance rules on top of the zone-based siting rules found in the same section. 768 as the statutory basis for the setback. Subsection D adds a second buffer: a cannabis business cannot open within 500 feet of another permitted medical cannabis dispensary, so Vista cannot cluster licensed retailers next to each other even inside the commercial and industrial zones where cannabis use is otherwise allowed. Both distances are measured under subsection F in a straight line, without regard to intervening structures, from the front door of the cannabis business; subsection D separately describes the dispensary-to-dispensary measurement as running door to door.

94 controls. That cross-reference is what carries the 600-foot school buffer and the 500-foot dispensary buffer over onto adult-use storefronts as well as medical dispensaries. 090 run to K-12 schools and to other dispensaries. A site inside one of these buffers cannot be cured with a variance under this chapter; the location itself is disqualified from cannabis registration until the buffer no longer applies.