Lot coverage limits in unincorporated San Diego County are set by the Zoning Ordinance. Coverage typically ranges from 25% to 60% depending on zone. ADUs up to 800 sq ft are exempt from lot coverage calculations per state law.
The County Zoning Ordinance establishes maximum lot coverage percentages for each zone. Rural zones typically allow 25-35% coverage, semi-rural zones 35-50%, and village residential zones up to 60%. Lot coverage includes all structures (buildings, garages, carports, covered patios) measured at their foundation footprint. ADUs up to 800 sq ft are exempt from lot coverage calculations per California Government Code §65852.2, meaning they can be built even on lots at maximum coverage. Uncovered decks, walkways, and swimming pools typically do not count toward lot coverage. Lot coverage variances require demonstrated hardship.
Exceeding lot coverage limits without approval may result in permit denial for new construction or required removal of non-compliant structures.
San Diego County, CA
San Diego County Code Chapter 6 (Animal Control) and the noise ordinance address barking dogs. Persistently barking dogs that disturb neighbors violate Secti...
San Diego County, CA
San Diego County Code of Regulatory Ordinances Section 36.404 sets noise limits by property zone and time of day. Residential zones: 50 dBA daytime (7 AM–10 ...
San Diego County, CA
Vehicles on public streets in unincorporated San Diego County cannot be parked for more than 72 consecutive hours. A vehicle must be moved at least 0.5 miles...
San Diego County, CA
Unincorporated San Diego County does not have a blanket overnight parking ban. The 72-hour parking rule applies. Some specific communities or HOAs may impose...
San Diego County, CA
Unincorporated San Diego County enforces the 2022 California Residential Code Section R314 (adopted under County Code Title 9, Division 1) for smoke alarms. ...
San Diego County, CA
Tree trimming in unincorporated San Diego County is required for defensible space maintenance (branches pruned to 6 feet above ground), utility clearance, an...
See how San Diego County's lot coverage limits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.