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Los Angeles County’s ADU Resource

Thinking about an ADU?
Don’t get caught off guard.

See what your lot allows, and what it would really cost.

What does your lot actually allow?

Zoning, fire and historic overlays, and what your neighbors have permitted. Free, from public records, in about 15 seconds.

Already know you can build? Get your line-item ADU budget

1,611+ local businesses listed

927 licenses verified with the State of California

Free budget reports on real LA County costs

Find a pro

Pick a trade and a city — every result is a real LA County business.