ADU Company in Ontario, CA
Kitchen remodeling in Ontario typically costs $18,000 to $48,000 for a full renovation, with most projects landing between $25,000 and $40,000 depending on cabinet grade, layout changes, and whether you’re working with a 1950s ranch or a newer north-Ontario subdivision home. We’re Newport Beach ADU Builders, and we’ve served Ontario since 2016. Our kitchen crews work around one thing most coastal contractors don’t plan for: Ontario’s August heat, which means cabinet shops, finishes, and appliance scheduling all move faster when the work is sequenced for a 100-degree inland summer. Call (844) 934-0236 for a free kitchen remodel estimate.
Why Ontario Homes Are Different
Ontario’s housing stock is dominated by 1950s through 1970s single-story ranch and tract homes, most of them on generous lots that make additions and ADUs physically straightforward. But the bones of these houses create real work. The typical Ontario kitchen or bathroom remodel starts with a 60 to 100 amp main panel that dates to the original build, and adding modern appliances, induction cooktops, or an ADU subpanel often pushes that panel past its rated capacity. We plan for panel upgrades as a line item, not a surprise.
The city’s flat, wide-lot grid is a genuine advantage. Detached backyard ADUs in ZIPs 91761, 91762, and 91764 rarely face the slope or drainage headaches common in foothill cities. The constraint here is not space, it’s utility tie-in distance. Long trenching runs from the main panel to a rear-alley garage conversion are common, and they’re made worse by mature citrus-era landscaping roots that push up through older lines and complicate trenching for a new subpanel. Add in HOA covenants from the 1980s-2000s subdivisions that predate California’s ADU streamlining laws, and Ontario projects reward a contractor who reads both the state code and the neighborhood’s private restrictions before digging.
Our Main Ontario Services
Ontario homeowners call us most about two projects: building ADUs on their existing lots, and remodeling bathrooms in those same postwar homes. Here’s what each looks like locally.
ADU Builders in Ontario
Ontario sits squarely in the Inland Empire’s push to legalize and streamline accessory dwelling units, and the city’s large stock of postwar single-family lots makes it one of the region’s strongest ADU markets. We’re an authorized builder and installer for Abodu, Plant Prefab, and Tuff Shed, among others, which means we can match a factory-built unit to your lot, your HOA, and your rental-income or family-housing goal rather than pitching one product. Garage conversions on rear alleys and long driveways are common here, and we handle panel upgrades, trenching, and utility tie-ins as part of the same contract. ADU Builders in Ontario covers pricing, timelines, and which brands fit which Ontario lots.
Bathroom Remodeling in Ontario
Most Ontario bathroom remodels happen in 1950s-1970s homes where the original cast-iron drain stacks and galvanized supply lines are at or past their useful life. We replace them rather than patch around them, because a $4,000 cosmetic refresh that ignores a failing subfloor or a corroded vent stack becomes a $14,000 emergency later. Ontario’s hot, dry summers keep moisture problems lower than coastal cities, but Santa Ana wind events carry fine dust that settles into every open wall cavity, so we tent and seal work areas more aggressively here than we would in Newport Beach. Bathroom Remodeling in Ontario has full pricing and process details.
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 homes built between 1955 and 1985, where the original footprint is usually small by today’s standards and the electrical panel was sized for a 1970s appliance load. We open these kitchens carefully because the load-bearing walls in Ontario’s ranch homes don’t always run where the decades of remodels suggest they do. Our crews also sequence cabinet finishing and appliance installation around Ontario’s summer heat, which can warp solid wood cabinet doors left in a hot garage or unventilated room during August. The full scope of what we recommend and why is on our Kitchen Remodeling page, but the Ontario-specific reality is this: a thoughtful remodel here improves how the kitchen handles inland heat, how the electrical system supports modern cooking, and how the layout works for a family that’s often added an ADU out back and now hosts more people for dinner than the original 1963 floor plan ever imagined.
Full Gut Renovation
Signs you need it
Your Ontario kitchen’s original 1960s cabinets are failing at the hinges, the flooring is delaminating, and the layout traps whoever’s cooking in a corner while the rest of the family crowds the one narrow doorway.
What it costs in Ontario
A full gut renovation in Ontario runs $32,000 to $48,000, including demo, reconfiguration, new cabinetry, counters, appliances, flooring, and electrical or plumbing updates to current code.
How we do it
We demo to the studs, inspect the framing and electrical for surprises common in Ontario’s older tract homes, then rebuild the kitchen in a layout that works for the way your household actually cooks, eats, and gathers.
Cabinet Refacing or Replacement
Signs you need it
Your cabinet boxes are structurally sound but the doors are warped from Ontario’s dry heat, the finish is chipped, or the layout no longer makes sense for the appliances you now own.
What it costs in Ontario
Cabinet refacing in Ontario runs $8,000 to $15,000, while full cabinet replacement with mid-grade construction typically runs $12,000 to $22,000 depending on linear footage and door style.
How we do it
We measure every cabinet run, confirm wall squareness (older Ontario homes have settled), order doors or full boxes sized to the actual openings, and install with soft-close hardware and a finish rated for inland temperature swings.
What Kitchen Remodeling Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Full gut renovation | $32,000 – $48,000 |
| Cabinet refacing | $8,000 – $15,000 |
| Cabinet replacement | $12,000 – $22,000 |
What pushes Ontario kitchen prices higher than the coastal average is panel work. A 60-amp 1962 panel feeding a new induction range, microwave, and dishwasher usually needs a $3,500 to $6,000 service upgrade before any appliances go in, and we include that in the written quote rather than discovering it mid-project.
How long does a kitchen remodel take in Ontario?
A full Ontario kitchen remodel takes 6 to 10 weeks from demo to final walkthrough. Cabinet refacing runs 1 to 2 weeks. We schedule around Ontario’s summer heat so finishes cure properly and appliances aren’t installed during 105-degree stretches. Call (844) 934-0236 for a timeline tied to your specific scope.
Will my Ontario kitchen remodel require a permit?
Yes, any remodel that moves plumbing, electrical, or walls requires city permits in Ontario. We pull all permits, schedule inspections, and close them out before you make the final payment. Unpermitted work becomes a liability when you sell or refinance in Ontario’s active resale market.
Brands We Service in Ontario
We install and service ADUs and building materials from Plant Prefab, Tuff Shed, and James Hardie, with parts and finishes stocked through local Inland Empire suppliers to keep Ontario project timelines tight. For a full list of the manufacturers we’re authorized to build or install, see our brands.
Pricing for ADU Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Kitchen full gut renovation | $32,000 – $48,000 |
| Kitchen cabinet refacing | $8,000 – $15,000 |
| Kitchen cabinet replacement | $12,000 – $22,000 |
The biggest price driver in Ontario is main panel capacity, since most 1950s-1970s homes were built with 60 to 100 amp service that needs upgrading before a modern kitchen or ADU tie-in can pass inspection. We write fixed-price quotes with no change orders, and every quote includes the panel work we can see before we start.
Neighborhoods We Serve in Ontario
We work throughout Ontario, including the ranch-home neighborhoods south of the 60, the newer subdivisions north and east toward the 15, and the older grid streets where rear-alley garages are the most common ADU conversion sites.
- Northeast Ontario (91761)
- Central Ontario (91762)
- South Ontario and the 60 corridor (91761)
- North Ontario near the 10 and 15 interchange (91764)
- West Ontario bordering Montclair (91762)
For most Ontario projects, we can have a crew on site for the first walkthrough within a week of your call.
Service Area – Cities Near Ontario
From our Ontario projects, we regularly take on work in surrounding Inland Empire cities. That includes Montclair, CA to the west, Upland, CA to the north, Chino, CA to the south, and San Antonio Heights, CA up against the foothills. Each city has its own permit office and its own older-home quirks, and we’ve built ADUs and remodeled kitchens in all of them.
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
We handle everything we legally can. State ADU law overrides many HOA restrictions, but not all, and Ontario’s 1980s-2000s subdivisions have covenants that require careful review before design starts. We read your HOA’s CC&Rs, flag the sections that conflict with state law, and help you submit what’s needed. Call (844) 934-0236 and we’ll review your specific HOA documents.
We serve all of Ontario, including 91758, 91761, 91762, and 91764. Our crews work north of the 10, south of the 60, and throughout the central grid. If you’re in an Ontario ZIP not listed, call us anyway. Our service area covers the full city.
Yes, and this is exactly where our model helps. Ontario homeowners often want a backyard ADU for rent or family plus a kitchen remodel in the main house, and we keep both under one contract, one schedule, and one permit strategy. No second contractor, no mismatched timelines, no finger-pointing between crews.
If you’re planning a kitchen remodel or ADU in Ontario, call (844) 934-0236 for a free estimate. We’ll walk your lot, check the panel, look at the trenching path, and give you a written number that includes everything we can see before work starts. Home is where every good project begins.
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
"Garage conversion to a one bedroom unit. He handled the plans, the city submittal, and every round of corrections. Took six months from first meeting to final inspection and he never once made the permit process my problem."
— Diego Castillo"Sound insulation between the unit and the main house is better than I expected. You genuinely cannot hear the tenant."
— Malik Nash"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Steven Nguyen