Lot coverage in unincorporated LA County varies by zoning district under Title 22. Community Standards Districts may impose additional lot coverage restrictions. Residential zones typically limit coverage to maintain open space, with specific percentages set by zone classification.
Maximum lot coverage in unincorporated LA County is established by zone under Title 22. R-1 (single-family residential) zones typically allow 35-45% lot coverage. R-2 and R-3 (multi-family) zones may allow 40-60% coverage. Coverage includes all roofed structures (house, garage, carport, accessory buildings). Uncovered decks, patios, and driveways are generally excluded from lot coverage calculations. ADUs are exempt from lot coverage maximums under state law (Gov Code 65852.2). Projects exceeding lot coverage limits require a variance from the Regional Planning Commission.
Exceeding lot coverage limits without a variance is a zoning violation under Title 22. The Department of Regional Planning issues notices of violation requiring correction within 30 days. Failure to comply can result in administrative fines of $250-$1,000 per day. Building permits will not be issued for projects that exceed coverage limits without an approved variance.
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Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle lot coverage limits.
See how South San Gabriel's lot coverage limits rules stack up against other locations.
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