Studio
Converted two-car garage
Studio1 bath
Home · Service areas · Santa Ana
ADU design-build · Santa AnaADUs in Santa Ana
Historic neighborhoods, busy family homes and strong demand for rentals: Santa Ana has invested in making ADUs simpler to permit.
What applies to your lot
Building an ADU in Santa Ana
Who approves your ADU
City of Santa Ana: Planning and Building review ADUs, often at the same time. 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.
Pre-approved plans
Santa Ana offers pre-approved detached ADU plans in studio, one- and two-bedroom layouts, with several design styles.
Where they cannot be used
The city excludes flood zones A and AE and the historic districts of French Park, Downtown and Floral Park from its pre-approved plans. There, we design a custom ADU.
Concurrent review
Pre-approved ADU plans are reviewed by Planning and Building at the same time, which saves weeks.
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 Santa Ana lots
1 bedroom
L-shaped one-bedroom
1 bed1 bath
2 bedrooms
Compact two-bedroom
2 beds1 bath
FAQ
ADU questions in Santa Ana
Who approves an ADU in Santa Ana?
The City of Santa Ana, in Orange County.
I live in French Park. Can I still build?
Yes, with a custom design rather than a pre-approved plan, and attention to what is visible from the street.
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 areasAnaheimIrvineHuntington Beach
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