California / Local ADU planning

Your ADU,
in Los Angeles.

Separate city and county plan catalogs, with local design and building resources.

The local starting point

Start by identifying LADBS, LA County or another city as your permitting agency. Check the exact plan’s current status before relying on preapproval.

2 jurisdiction guides2 provider records

Start with the right permit office

Find your local guide.

City of Los Angeles and the County permitting path. Other incorporated cities are not yet covered by a local guide.

Explore the design options

Local plan programs.

A standard design still needs site-specific work. Program participation does not verify a builder’s current license.

Make a useful shortlist

Explore ADU providers.

Company websites and public permits provide different kinds of evidence. Listings are research starting points; confirm service area, credentials and availability directly.

Get ready for the first conversation

A clearer scope.
A more useful quote.

Build a budget with your own local estimates, then compare providers on design, site work, utilities and permit responsibilities.

Build your budget ↗

Before you hire

Use the quote comparison checklist ↗California CSLB contractor lookup

Check the relevant professional board for architects and other separately licensed services.