After San Diego (2,165), the cities that issued the most ADU permits in San Diego County in 2025 were Chula Vista (223), Escondido (117), Vista (100), El Cajon (86), Encinitas (85).
Source: California HCD, Housing Element Annual Progress Reports, read November 12, 2026. Counts are each city's own report to the State.
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After Los Angeles (12,334), the cities that issued the most ADU permits in Los Angeles County in 2025 were Glendale (695), Long Beach (644), Lakewood (498), Downey (244), Burbank (241).
Source: California HCD, Housing Element Annual Progress Reports, read November 12, 2026. Counts are each city's own report to the State.
San Diego issued 2,165 building permits for ADUs in 2025, 10 times the 2018 count of 216.
Source: California HCD, Housing Element Annual Progress Reports, read November 12, 2026. Counts are each city's own report to the State.
After Fullerton (589), the cities that issued the most ADU permits in Orange County in 2025 were Anaheim (441), Garden Grove (434), Santa Ana (258), Westminster (215), Buena Park (179).
Source: California HCD, Housing Element Annual Progress Reports, read November 12, 2026. Counts are each city's own report to the State.