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ADU regulations by city in Los Angeles and Orange County.

We design and build ADUs throughout Los Angeles and Orange Counties. Find your municipality’s requirements below — and if you don’t see your city, contact us and we’ll help.

49 cities and areas across Los Angeles and Orange County

Carriage ADU — Long Beach

Carriage ADU — Long Beach

Two-story ADU — Los Angeles

Two-story ADU — Los Angeles

State Law Basics

What applies almost everywhere in California.

800 ft²Every city must allow an ADU of at least this size
4 ftSide and rear setbacks for new detached ADUs
60 daysFor cities to act on a complete ADU application
<750 ft²ADUs under this size don’t pay impact fees

Local rules vary. Our free analysis confirms exactly what applies to your property.

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Serving homeowners throughout Los Angeles and Orange County.