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.
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The City of Los Angeles issued 12,334 building permits for ADUs in 2025, 3 times the 2018 count of 4,079.
Source: California HCD, Housing Element Annual Progress Reports, read November 12, 2026. Counts are each city's own report to the State.
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.