Can you build an ADU in Sepulveda Basin, Los Angeles?

Yes — about 18% of Sepulveda Basin's roughly 550 analyzed single-family lots can add an ADU by-right. Most are zoned OS, 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 Sepulveda Basin

Lots analyzed
550
Likely eligible
18%
Typical max size
1,200 sq ft
Median lot
9,707 sq ft

Typical zoning in Sepulveda Basin

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

ZoneLotsADU outlook
OS311Not allowed
PF96Not allowed
R193Allowed
FRWY27Not allowed
M210Not 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).

Sepulveda Basin ADU questions

In most of Sepulveda Basin, yes. About 18% of its analyzed single-family lots can add an accessory dwelling unit by-right, most commonly on OS-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

Shadow HillsSherman OaksSilver LakeSouth ParkStudio CitySun ValleySunlandSylmar

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