Can you build an ADU in Fairfax, Los Angeles?

Yes — about 81% of Fairfax's roughly 3,402 analyzed single-family lots can add an ADU by-right. Most are zoned R1, 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 Fairfax

Lots analyzed
3,402
Likely eligible
81%
Typical max size
1,200 sq ft
Median lot
6,422 sq ft

Typical zoning in Fairfax

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

ZoneLotsADU outlook
R1941Allowed
R1V2579Allowed
C2504Needs review
RD1.5488Allowed
R2437Allowed

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).

Fairfax ADU questions

In most of Fairfax, yes. About 81% of its analyzed single-family lots can add an accessory dwelling unit by-right, most commonly on R1-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

FlorenceGlassell ParkGramercy ParkGranada HillsGreen MeadowsGriffith ParkHancock ParkHansen Dam

Find out what your backyard allows

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

Check my lot