ADU · Santa Ana
Detached ADU (Ground Up), Santa Ana
A ground-up detached ADU on a flat Santa Ana lot: new foundation, full utility runs, an open-plan living/kitchen core, and a pergola entry that gives the unit its own front-door presence. Designed, permitted, and built in-house by Avorino.
Project record
800
sq ft
approx.
- City
- Santa Ana, CA
- Builder
- Avorino · Lic. #1107538
- Typical budget
- $245K–$440K+ (detached ADU)
- Typical timeline
- 5–8+ months build, after design + permits
- Warranty
- 1-yr fit & finish · 4-yr systems · 10-yr structural
- Layout
- approx. 2 bed · 2 bath
- Stories
- Single-story
- Build
- Ground-up · Flat lot
Sizes and room counts marked approx. are estimates from plans and photos.
Scope of work
What this build involved.
- New foundation + ground-up framing
- Independent utility runs (sewer, water, electrical)
- Open-plan living + white-shaker kitchen with quartz counters
- Full bath with walk-in shower
- Pergola entry + dedicated exterior approach
- Title 24 energy compliance, handled in-house
Permits & process
Santa Ana ADUs run through standard city plan check (typically 4–6+ weeks), with extra review layers only in the Downtown Specific Plan and historic districts. Avorino handled submittal, corrections, and inspections end-to-end.
The build
Ground-up detached units carry the full site-work load — trenching, foundation, and independent utilities — which is exactly where fixed-price design-build pays off: the number is set before ground breaks.
Plates
Finish + structural detail.
05 finished frames
What clients say about this kind of build
“We had Avorino build us an ADU recently. They provided the full design and rendering, pulled permits, and built our 1,000 sqft ADU from start to finish. Easy to work with, prices very competitive. We've already recommended Avorino to friends.”
Next step
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