San Diego County sets maximum building height by a Height Designator on Schedule B. Limits range from 15 feet/1 story up to 60 feet, and anything over 60 feet requires a Major Use Permit.
In unincorporated Bostonia, maximum building and structure height is set by the San Diego County Zoning Ordinance Height Regulations (§ 4600 et seq.). A Height Designator letter on Schedule B (§ 4610) fixes the maximum height in feet and number of stories — for example designator A allows 15 feet/1 story, C allows 25 feet/2 stories, and I allows 35 feet/4 stories. Any height in excess of 60 feet requires a Major Use Permit. Certain structures (chimneys, antennas) may be exempt under § 4620, and an additional story may be allowed on sloped lots (§ 4615). Confirm your parcel's Height Designator with County Planning & Development Services.
Buildings exceeding the applicable height designator are zoning violations; the County can deny permits, require redesign, or pursue code-compliance enforcement.
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Side-by-side rule comparisons with other cities in San Diego County.
See how other cities in San Diego County handle structure height limits.
See how Bostonia's structure height limits rules stack up against other locations.
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