Can you build an ADU in San Pedro, Los Angeles?

Yes — about 80% of San Pedro's roughly 20,237 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 San Pedro

Lots analyzed
20,237
Likely eligible
80%
Typical max size
1,200 sq ft
Median lot
5,003 sq ft

Typical zoning in San Pedro

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

ZoneLotsADU outlook
R19,521Allowed
RD1.52,329Allowed
R22,271Allowed
C21,397Needs review
RD21,373Allowed

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).

San Pedro ADU questions

In most of San Pedro, yes. About 80% 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

SawtelleSepulveda BasinShadow HillsSherman OaksSilver LakeSouth ParkStudio CitySun Valley

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