Can you build an ADU in Sun Valley, Los Angeles?

Yes — about 79% of Sun Valley's roughly 15,956 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.

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ADU eligibility in Sun Valley

Lots analyzed
15,956
Likely eligible
79%
Typical max size
1,200 sq ft
Median lot
6,907 sq ft

Typical zoning in Sun Valley

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

ZoneLotsADU outlook
R19,227Allowed
RS2,020Allowed
M1695Not allowed
C2649Needs review
M2646Not 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).

Sun Valley ADU questions

In most of Sun Valley, yes. About 79% 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

SunlandSylmarTarzanaToluca LakeTujungaUniversity ParkValley GlenValley Village

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