Can you build an ADU in Larchmont, Los Angeles?

Yes — about 83% of Larchmont's roughly 1,669 analyzed single-family lots can add an ADU by-right. Most are zoned R3, which typically allows a detached ADU up to about 1,200 sq ft. These are zoning-only estimates; overlays like hillside, coastal, or historic can change the answer, so check your exact address for the rule that applies to your lot.

Check your exact address →

ADU eligibility in Larchmont

Lots analyzed
1,669
Likely eligible
83%
Typical max size
1,200 sq ft
Median lot
5,758 sq ft

Typical zoning in Larchmont

The most common zones here, by number of analyzed lots. Your parcel’s zone sets which ADU rules apply.

ZoneLotsADU outlook
R3671Allowed
R1R3656Allowed
C2236Needs review
R261Allowed
PPSP15Not allowed

Eligibility is zoning-only (zoning-only (overlays excluded; see checker for per-lot verdict)). Ruleset la-2026.06. Neighborhood boundaries: Los Angeles Times / Mapping L.A. (CC BY 4.0).

Larchmont ADU questions

In most of Larchmont, yes. About 83% of its analyzed single-family lots can add an accessory dwelling unit by-right, most commonly on R3-zoned parcels. Your lot's exact answer depends on its zone, size, and any overlays — enter your address to see the rule that applies to you.

ADUs in other LA neighborhoods

Leimert ParkLincoln HeightsLos FelizManchester SquareMar VistaMid-CityMid-WilshireMission Hills

Find out what your backyard allows

Enter your Los Angeles address and get an instant, sourced ADU verdict — free, no signup.

Check my lot