ADU Company in Ontario, CA
Kitchen remodeling in Ontario means working with the bones of a 1950s-to-1970s stucco tract home: galley layouts, original 100-amp panels, and cast-iron drain lines that were never sized for a modern kitchen. Uptown ADU Builders handles the full remodel, from rewiring and plumbing through cabinetry, counters, and finish work, so you get one accountable team instead of three separate subcontractors. Call (877) 752-4191 for a free estimate on your Ontario kitchen.
Why Ontario Homes Are Different
Ontario’s housing stock skews heavily toward post-WWII and mid-century single-story tract homes. Most of the original kitchens in the 91761, 91762, and 91764 corridors were built with 60-amp or 100-amp electrical service, and many still have their original clay sewer laterals. That matters when you’re pulling permits for a kitchen remodel in Ontario, because adding a 50-amp range circuit or running a new drain line frequently triggers a panel upgrade or lateral repair before the finish work can begin. The local climate adds another layer: Ontario summers routinely push past 100°F, and Santa Ana wind events mean dust gets everywhere during construction. We sequence Ontario kitchen remodels around those realities, swapping out undersized electrical early so inspections pass without delays, and using materials that hold up to dry Inland Empire heat rather than coastal moisture assumptions.
Our Main Ontario Services
Ontario homeowners call us most often for two things: building a detached ADU in a mid-century backyard, and remodeling the aging bathrooms in those same tract homes. Both are covered below, each with its own dedicated Ontario page.
ADU Builders in Ontario
Ontario is one of the best Inland Empire cities for detached ADUs, thanks to the large 6,000-to-8,000-square-foot lots that came with the postwar tract boom. The catch is that most of those older homes have 100-amp panels and original clay sewer laterals, so the real cost of an ADU in Ontario often lives underground and behind the meter, not in the structure itself. Uptown ADU Builders has served Ontario since 2018 and navigates that permit and utility path every week. Learn more on our ADU Builders in Ontario page.
Bathroom Remodeling in Ontario
Bathrooms in Ontario’s 1950s and 1960s tract homes tend to be small, with original cast-iron tubs, tile set over drywall, and exhaust fans venting into the attic rather than outside. Remodeling them properly means correcting the ventilation and waterproofing, not just swapping finishes. We pull the same permits and handle the same plumbing and electrical work in bathrooms that we do in kitchens, so there is no handoff gap. Full details are on our Bathroom Remodeling in Ontario page.
What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Kitchen Remodeling in Ontario
Kitchen remodeling in Ontario means working with the bones of a mid-century tract home: galley layouts, original 100-amp panels, and cast-iron drain lines that were never sized for a modern kitchen. Our Kitchen Remodeling work covers everything from full gut-and-rebuild projects to cabinet refacing, with the electrical and plumbing upgrades that Ontario’s older homes almost always need. In the 91761 and 91762 neighborhoods especially, we regularly open walls and find galvanized supply lines and cloth-wrapped wiring that has never been touched since the house was built.
Full Kitchen Gut and Rebuild
Signs you need it
Your Ontario kitchen cabinets are pulling away from the walls, the layout closes off the dining area, or the tile counters and backsplash are original to the 1960s.
What it costs in Ontario
A full kitchen gut and rebuild in Ontario typically runs $45,000 to $75,000, depending on cabinet grade, counter material, and how much electrical and plumbing correction is hiding behind the walls.
How we do it
We demo to the studs, upgrade the electrical panel and circuits if needed, replace supply and drain lines, then rebuild with new drywall, cabinetry, counters, flooring, and a full finish pass.
Kitchen Cabinet Refacing and Counter Replacement
Signs you need it
Your cabinet boxes are solid but the doors and drawer fronts are dated or delaminating, and the laminate counters are chipped, burned, or stained beyond repair.
What it costs in Ontario
Cabinet refacing with new counters in Ontario generally lands between $12,000 and $25,000, a fraction of a full rebuild and a common choice for Ontario homeowners preparing a rental or resale.
How we do it
We keep the existing cabinet boxes, replace doors, drawer fronts, and hardware, install new countertops and sink, and leave the kitchen functional throughout, with no wall demolition or permit-triggering electrical work.
What Kitchen Remodeling Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Full kitchen gut and rebuild | $45,000 – $75,000 |
| Cabinet refacing and counter replacement | $12,000 – $25,000 |
| Island addition or layout reconfiguration | $8,000 – $18,000 |
How long does a full kitchen remodel take in Ontario?
A full gut-and-rebuild kitchen remodel in Ontario typically takes 6 to 10 weeks. Older Ontario homes often add a week for panel upgrades and lateral repairs before finish work starts. Call (877) 752-4191 for a project-specific timeline.
Will my Ontario kitchen remodel require a permit?
Yes. Any Ontario kitchen remodel that moves plumbing, adds circuits, or changes the electrical panel requires a city permit. We pull all permits and handle inspections for you. Call (877) 752-4191 to find out what your project triggers.
Brands We Service in Ontario
We work with prefab ADU brands including Plant Prefab, Tuff Shed, and Abodu, and use James Hardie fiber cement for durable, low-maintenance exterior finishes on Ontario ADUs. Turnaround on brand-specific parts and panels is typically days, not weeks. See our brands for the full list.
Pricing for ADU Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Full kitchen gut and rebuild | $45,000 – $75,000 |
| Kitchen cabinet refacing and counter replacement | $12,000 – $25,000 |
| Kitchen island addition or layout reconfiguration | $8,000 – $18,000 |
| Detached ADU construction | $150,000 – $300,000 |
| Garage conversion ADU | $90,000 – $150,000 |
| Primary bathroom remodel | $15,000 – $35,000 |
| Guest or hall bathroom remodel | $8,000 – $20,000 |
| Bathroom tub-to-shower conversion | $6,000 – $12,000 |
In Ontario, the two biggest price movers are electrical panel capacity and sewer lateral condition. Homes in the older 91761 and 91762 tracts with original 100-amp panels and cast-iron or clay laterals will see upgrade costs that newer 91764 construction does not carry. Every Uptown ADU Builders estimate is a written line-item quote, and the price we agree on before demo is the price you pay at the end.
Neighborhoods We Serve in Ontario
Uptown ADU Builders covers all of Ontario, from the mid-century tracts south of downtown to the newer developments in the 91761 and 91764 corridors. Our teams are regularly working throughout the city, so scheduling is straightforward.
- Downtown Ontario and the historic district
- South Ontario neighborhoods near the 60 Freeway
- Archibald corridor in the 91761 ZIP
- Ontario Ranch and the 91764 area
- North Ontario near the 10 Freeway
Service Area – Cities Near Ontario
Beyond Ontario, we serve homeowners across the western Inland Empire. Our teams also work in Montclair, CA, Upland, CA, Chino, CA, and San Antonio Heights, CA. If you are in an adjacent community, call us and we will confirm coverage.
Serving Ontario, CA — Our Local Coverage Area
We’re based in the Ontario area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs About ADU Company in Ontario
Yes. Every project that requires a permit in Ontario gets one, including electrical panel upgrades, sewer lateral replacement, and structural changes. We handle the full permit process and pass every inspection before we consider the job done.
Most Ontario projects start within 2 to 4 weeks of the signed contract, depending on permit turnaround at the city and the scope of the work. Kitchen remodels and ADUs both follow that same schedule. Call (877) 752-4191 for current availability.
We serve the entire city, including 91758, 91761, 91762, and 91764. The older tract homes in the 91761 and 91762 areas are where we do most of our ADU and kitchen remodel work, but we are across all four ZIPs regularly.
Call (877) 752-4191 to schedule your free estimate in Ontario. Written line-item quotes, permits pulled, and one team from the first day to the final walkthrough.
What happens when you call
- 1A real person answersNo phone trees — talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Ontario Customers Say
"He gave us a realistic rental number for the finished unit rather than the optimistic one, and it's renting for about what he said."
— Ebony Dawson"Knew the local setback and parking rules cold, which saved us from designing something that would never have been approved."
— Maria Hernandez"He was honest that our lot had a slope problem that would add real cost, before we signed anything."
— Paige Kowalski