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Home · Service areas · Huntington Beach
ADU design-build · Huntington BeachADUs in Huntington Beach
Beach cottages, tract homes and steady demand from families and renters: in Huntington Beach, the right ADU depends on where your lot sits.
What applies to your lot
Building an ADU in Huntington Beach
Who approves your ADU
City of Huntington Beach: Community Development reviews ADUs, with coastal review where it applies. State law applies everywhere: a decision within 60 days of a complete application, no public hearing, and at least 800 sq ft with 4 ft side and rear setbacks.
A free pre-approved plan
Huntington Beach offers a free pre-approved ADU plan set in three architectural styles, compatible with local homes.
The Coastal Zone
A large part of the city is in the Coastal Zone. There, a coastal development permit is added to the ADU process.
Flood zones
Some low areas near the Santa Ana River and Bolsa Chica are FEMA flood zones, which can raise the floor level of the ADU. We check it first.
California law, everywhere
The rules every city must respect
800 sq ft
Every city must allow at least an 800 sq ft detached ADU with 4 ft setbacks.
4 ft
Maximum side and rear setback for a new detached ADU.
750 sq ft
No impact fees up to this size.
60 days
To approve or deny a complete application, without a hearing.
Ideas for your lot
Plans that suit Huntington Beach lots
1 bedroom
L-shaped one-bedroom
1 bed1 bath
2 bedrooms
Compact two-bedroom
2 beds1 bath
FAQ
ADU questions in Huntington Beach
Who approves an ADU in Huntington Beach?
The City of Huntington Beach, in Orange County, with coastal review when your lot is in the Coastal Zone.
Is the free city plan right for me?
It is a simple, single-story unit. If you need more space or bedrooms, a custom design may fit better.
Do you come to my property?
Yes. The visit is free: we look at the lot, the access and the utilities, then give you a realistic estimate.
Nearby areasLong BeachSanta AnaIrvine
Free feasibility call
Book a free 15-minute feasibility call
A project lead reviews your address, tells you what your lot can hold and gives you a first look at your financing eligibility.
What you get
- Free, with no obligation
- A clear answer on what your lot can hold
- A first look at financing eligibility, by phone or at your property
- A site visit only if it makes sense
Prefer to talk now? (424) 448-4895
Email: [email protected]
Los Angeles, CA · We come to your property
1 · Preferred time2 · Your property3 · Confirmed
Preferred day (Pacific time)
Preferred time
Tell us when to call you. A project lead calls you back at that time of day (Pacific time).
Your call is booked
We’ll confirm by text or phone. No obligation.
Service areas
Serving homeowners across Los Angeles
Los Angeles, the South Bay and Orange County, within about 40 miles of Paramount. Farther on request.
Service areas
ADU rules, city by city
Permits, fire and coastal zones, pre-approved plans: see what applies in the 36 cities we serve.
Central Los AngelesSan Fernando ValleyThousand OaksSimi ValleyParamountWest AdamsMid-CityCulver CityLong BeachDowneyWhittierNorwalkTorranceInglewoodComptonCarsonAnaheimSanta AnaIrvineHuntington BeachPasadenaGlendaleBurbankRialto (on request)Garden GroveOrangeFullertonCosta MesaNewport BeachTustinSherman OaksEncinoVan NuysWoodland HillsNorthridgeCalabasas