Can you build an ADU in Arlington Heights, Los Angeles?

Yes — about 80% of Arlington Heights's roughly 3,025 analyzed single-family lots can add an ADU by-right. Most are zoned RD2, 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 Arlington Heights

Lots analyzed
3,025
Likely eligible
80%
Typical max size
1,200 sq ft
Median lot
7,000 sq ft

Typical zoning in Arlington Heights

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

ZoneLotsADU outlook
RD21,032Allowed
RD1.5455Allowed
R3421Allowed
R1338Allowed
C2315Needs review

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).

Arlington Heights ADU questions

In most of Arlington Heights, yes. About 80% of its analyzed single-family lots can add an accessory dwelling unit by-right, most commonly on RD2-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

Atwater VillageBaldwin Hills/CrenshawBel-AirBeverly CrestBeverly GroveBeverlywoodBoyle HeightsBrentwood

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