ADU Rules by City.
Local ADU regulations across Los Angeles County — setbacks, permit fees, max sizes, parking requirements, and typical timelines. Select a city to see the full breakdown.
Select a City
Los Angeles City Neighborhoods
These neighborhoods are governed by the City of Los Angeles (LADBS). ADU rules follow City of LA standards, with neighborhood-specific considerations noted on each page.
How We Compile ADU Rules
California ADU law sets statewide minimums — 4 ft side and rear setbacks, max 1,200 sq ft detached, and no parking replacement required near transit. Cities may permit more but not less.
Each city page documents the applicable rules as of the listed update date, sourced from official municipal codes and building department guidance. LADU's permit team monitors rule changes across all jurisdictions we serve.
⚠️ ADU regulations change frequently. Always verify current requirements with your local building department before submitting plans. See: California ADU law changes 2025 →
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