Building height limits in unincorporated San Diego County are set by the Zoning Ordinance based on zone designation. Most residential zones allow structures up to 35 feet. Some zones permit up to 45 feet. Height is measured from finished grade to the highest point of the roof.
The County Zoning Ordinance establishes maximum building heights for each zone. Most residential zones (RS, RR, RC) allow buildings up to 35 feet. Some zones may allow up to 45 feet with conditions. Height is measured from finished grade to the highest point of the structure. Accessory structures typically have lower height limits. ADUs are limited based on state law: detached ADUs can be up to 16 feet at the property line, taller with 4-foot setbacks. Height limits may be more restrictive in scenic corridors, coastal zones, and areas near airports. Community plan areas may have additional height restrictions. Height variances require demonstrated hardship.
Buildings exceeding height limits may require modification, partial demolition, or retroactive variance approval. Stop-work orders issued during construction.
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See how San Diego County's structure height limits rules stack up against other locations.
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