Reviewed & updated August 7, 2026
Who builds ADUs in Stockton, California?
ADU Builder is a Sacramento-based design-build contractor that designs, permits and constructs accessory dwelling units (ADUs) in Stockton and across San Joaquin County, serving homeowners within roughly 200 miles of Sacramento. The company handles the full project under one contract: architectural drawings, structural engineering, Title 24 energy compliance, permit submittal and corrections, and construction through final inspection. It builds detached backyard ADUs, garage conversions and junior ADUs (up to 500 sq ft inside an existing home), most commonly between 400 and 1,200 sq ft. California law allows ADUs on single-family lots statewide, with ministerial (non-discretionary) review of compliant applications. Site visits and written estimates are free, with no obligation. Contact: (916) 432-0333 or [email protected].
ADU Builder in Stockton, CA
You mow it. You water it. You pay taxes on it. And in all the years you have owned your Stockton home, that backyard has never sent you a dime. Put a small legal home on it and it starts paying you – every month, for as long as you own the house. We handle the drawings, the city and the build. You approve the decisions and collect the rent.
Free on-site visit · No obligation · We tell you straight if your lot will not work
- Free on-site estimate
- No obligation, no pressure
- We handle the permits
- One contract – design through final inspection
Why Stockton homeowners are building ADUs right now
Infill in Stockton is a different craft from building in a suburb. Lots are narrower, access is often through a side yard or an alley, neighbours are close, and the existing house is frequently old enough that the electrical and sewer need attention. Done right, an urban ADU is one of the best-performing units you can own – close to jobs, transit and everything renters actually want.
What your lot has going for it
- Close to jobs and transit – consistently strong rental demand
- Alley or side access on many lots makes construction workable
- Older homes often need service upgrades – we identify them at the site visit
- Garage conversions and JADUs shine where yard space is limited
Concept illustration – not a photo of a completed project.
The math you have already done in your head
If you are reading this page, you have probably stood at the kitchen window, looked at that yard, and run the numbers at least once. Here is what the numbers are trying to tell you.
The expensive part is already paid for
Anyone else who wants rental income has to buy the land first. You do not. You are only paying for the building – the dirt under it has been yours for years.
Mom stays 30 steps away, not 30 minutes
Care facilities cost more than most mortgages, and nobody is happy there. A ground-floor unit with a walk-in shower keeps family close while everyone keeps their own front door.
Permitted, inspected, on the record
A legal ADU adds a documented second dwelling to your parcel. An unpermitted conversion does the opposite – it becomes the thing your buyer’s inspector finds.
Rent it. House family. Change your mind later.
Tenant this year, your kid next year, your office after that. Once it is built and permitted, nobody’s permission is needed to change what it does.
The yard already has a bill. Give it a job.
Water, mowing, taxes – it is the only part of your property that costs money every month and earns none back. That is a choice, not a fact of life.
One contract. One phone number.
When the designer, the permit runner and the builder are the same company, there is nobody to point fingers at. Something wrong? You call one number and it is our problem.
ADU options for Stockton properties
Detached unit, garage conversion, or a junior ADU inside the house – the right answer depends on your lot, not on what is easiest for us to sell. Here is what we build in Stockton.
Detached ADU
A brand-new standalone unit in the backyard – the highest rent and the strongest resale.
See how it works →
Garage Conversion
Turn a garage you barely use into a legal, rentable home. Usually the fastest route.
See how it works →
Junior ADU (JADU)
Up to 500 sq ft carved out of your existing house. The lowest-cost way in.
See how it works →
Design & Build
Drawings, engineering, permits and construction under one contract. One throat to choke.
See how it works →
Permits & Zoning
We prepare it, submit it, and fight the corrections until it’s approved.
See how it works →
Cost & Financing
What it really costs here – and the honest ways people pay for one.
See how it works →
ADU rules that apply in Stockton
California has spent the last several years stripping away the local rules that used to make ADUs almost impossible. The statewide framework now sets a floor that cities and counties cannot go below – and it is why so many Stockton homeowners can build today when they could not a few years ago.
- ADUs are allowed on single-family lots statewide – local agencies cannot ban them outright
- Ministerial approval – a compliant ADU application is reviewed without a discretionary hearing, so there is no neighbour veto
- Owner-occupancy cannot be required for standard ADUs under current state law
- Parking replacement is limited – in many situations cities cannot force you to replace a garage parking space you convert
- Junior ADUs up to 500 sq ft can be created inside the existing house, and many lots can have both a JADU and an ADU
- HOAs cannot flatly prohibit ADUs on single-family lots, though reasonable design standards can still apply
Your project is reviewed by the City of Stockton. That is where the local part comes in: setbacks, height, impact fees, utility connections and design standards still vary, and they are what decides whether your permit moves or stalls. We confirm exactly what applies to your address before design starts. See how we handle permits →
This is a plain-English summary of statewide law, not legal advice. Requirements change and local rules vary – we verify the current rules for your specific parcel.
Serving Stockton and the surrounding area
Stockton is about 48 miles south of Sacramento, well inside the area we cover from our Sacramento base.
ZIP codes we serve in Stockton: 95202, 95203, 95204, 95205, 95206, 95207, 95209, 95210, 95212, 95219
Book a free site visit → or call (916) 432-0333 and we will tell you in five minutes whether your property is a candidate.
How your Stockton build works
We come out – free
We walk your lot, tell you what will actually fit, and give you real numbers. Costs you nothing and there is no pitch at the end.
Design & engineering
Architectural drawings, structural engineering and Title 24 energy compliance – built to clear plan check the first time.
Permits handled
We prepare the submittal, file it, and work every correction until the permit is in hand. You do not sit in a planning queue.
Built and signed off
One crew, one schedule, one point of contact – through final inspection and keys in your hand.
Read this before you talk to any builder – including us
You have heard the stories. The deposit that vanished. The price that grew every time a wall opened up. The guy who stopped answering his phone in month three. That is the reason most people never make the call – and it is exactly why we work the way we do.
The visit costs you nothing
We come to your Stockton property, measure, look at utilities and access, and tell you what is realistic. No fee, no deposit, no obligation to do anything afterwards.
We will tell you if it does not work
If your lot, your septic or your budget will not support an ADU, we say so at the site visit – to your face, not in a voicemail. We would rather lose the job than take your money for a project that should not happen.
You get real numbers, not a range
After we have seen the property you get an actual written scope and price – not a per-square-foot guess that quietly grows once construction starts.
Get your free Stockton ADU estimate
Four quick questions. We come out, look at your property, and give you honest numbers – free.
Free ADU Estimate - Stockton
Tell us about your lot and we will call you with real numbers.
Stockton ADU questions, answered straight
Can you build if there is no rear access?
Usually yes. We plan material handling and equipment access before construction rather than discovering the problem on day one. It can affect cost, which is exactly why we look at it during the free site visit.
My Stockton house is old. Will it need upgrades?
Often the electrical service and sometimes the sewer lateral. These are normal, predictable items on older homes – the difference between a good builder and a bad one is telling you about them before you sign, not after.
Do you actually build in Stockton?
Yes. Stockton is about 48 miles south of Sacramento and it is inside our regular service area – we build up to roughly 200 miles out from our Sacramento base. Permits go through the City of Stockton. Call (916) 432-0333 and we will book a free site visit.
We also build near Stockton
Picture the first of the month, one year from now
Version one: rent lands in your account, and the yard finally earns its keep. Version two: same lawn, same water bill, nothing changed. The only difference between them is one free site visit – and you already know which version you want.