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ADU builder in Garden Grove, CA
Garden Grove makes ADUs straightforward: flat lots, no coastal, fire or hillside overlays, and the city’s ADU Go! program of free, pre-approved plans with faster decisions.
North Orange County
Building an ADU in Garden Grove.
What’s different about adding an ADU here, and how we plan around it.
ADU Go! pre-approved plans
Garden Grove offers four free, city-owned pre-approved ADU plans, from a studio to three bedrooms, plus a catalogue of architects’ pre-approved plans. Projects using a pre-approved detached plan get a 30-day decision instead of the usual 60. Pre-approved plans can’t be used in a Special Flood Hazard Area (Flood Zone A).
Sized by bedroom count
Garden Grove’s ordinance allows detached ADUs up to 850 sq ft as a studio or one-bedroom, and up to 1,200 sq ft with two or more bedrooms, with 6 ft of separation from the main house.
Simple sites
Garden Grove has no coastal, fire or hillside ADU overlays, and most lots are flat. That keeps site work and permitting predictable.
Plans that fit
Floor plans that work within Garden Grove’s rules.
These ready-to-build plans fit Garden Grove’s size, height limits. Our studio can adjust any of them to your lot.
Plan 400E
Studio · 1 Bath · 400 ft²
Plan 450
1 Bed · 1 Bath · 450 ft²
Plan 484
1 Bed · 1 Bath · 484 ft²
Plan 780
2 Bed · 1 Bath · 780 ft²
Plan 800
2 Bed · 2 Bath · 800 ft²
Plan 1000
3 Bed · 2 Bath · 1,000 ft²
How we work in Garden Grove
One team from first visit to move-in.
01
Free ADU analysis
We review your Garden Grove lot, what the local rules allow and which plans fit, with an estimated cost.
02
Design
Our in-house studio prepares construction-ready plans in about 1–2 months.
03
Permits
We submit to the City of Garden Grove and handle every round of plan check.
04
Fixed-price build
Construction in about 4–5 months, managed by one project manager from our Long Beach office.
Garden Grove ADU questions
Common questions in Garden Grove.
Does Garden Grove have pre-approved ADU plans?
Yes. Through its ADU Go! program, the city offers four free pre-approved plans (studio to three bedrooms) and posts architects’ pre-approved plans. Using a pre-approved detached plan shortens the decision deadline to 30 days.
How big can an ADU be in Garden Grove?
Up to 850 sq ft for a studio or one-bedroom, and up to 1,200 sq ft with two or more bedrooms. A junior ADU inside the house can be up to 500 sq ft.
Can I use a pre-approved ADU plan anywhere in Garden Grove?
Not in a Special Flood Hazard Area (Flood Zone A). Elsewhere, projects must still meet the city’s setback, height and separation standards. We check your parcel.
Nearby
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Start a Conversation
Planning an ADU in Garden Grove?
Tell us about your Garden Grove property and we’ll prepare a free ADU analysis: what fits on your lot, the rules that apply, recommended plans, estimated cost and timeline.
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