Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Remodeling Company in Ontario, CA
Home renovation in Ontario, CA works differently than it does in the coastal basin. The city’s 1950s-70s housing stock, summer heat that routinely crosses 100°F, and the warehouse-boom soils beneath newer parts of town create a specific set of remodeling conditions. Millwright Builders handles full-scope home renovation in Ontario under one contract, from structural work and roofing to kitchens, baths, and ADUs. Call (866) 925-0334 for a free estimate on your project.
Why Ontario Homes Are Different
Ontario splits its housing identity between two worlds. In 91762 and 91764, you’ll find dense blocks of postwar single-story stucco tract homes and older ranch houses, most built between 1955 and 1975. These homes carry low-slope or flat roofs, aging galvanized plumbing that eventually gives way to early copper, and slab-on-grade foundations that make moving drains or adding a bathroom a real planning exercise. Renovation here means working with what the original builders left, and what six decades of Inland Valley heat has done to it.
The climate drives specific material choices. Ontario sits in the hot, dry Inland Valley, where Santa Ana wind events and summer temperatures well above the coastal basin punish exterior materials. Stucco fails in predictable patterns here, and concrete cures fast and hot in summer, which changes pour schedules and finishing techniques. Homeowners regularly ask for shade structures, reflective roofing, and additions sized for HVAC capacity that coastal homes never need. Meanwhile, the warehouse-boom land around 91761 sits on former citrus groves, and crews digging for additions or ADUs there routinely hit old irrigation lines and disturbed fill soils. That’s a soil condition interior-city remodels simply don’t encounter, and it changes how we approach foundation and utility work.
Styles & brands we work with
Our Main Ontario Services
Two services account for most of the calls we get from Ontario homeowners. Both draw on the full Millwright scope, and both have their own pages with deeper detail.
General Contractor in Ontario
When a project spans multiple trades, someone has to own the schedule, the subs, and the accountability. That’s the general contractor role, and in Ontario it often means coordinating roof replacement with stucco repair, window replacement with interior finish work, or a whole-home renovation where the scope keeps expanding. Our team handles the permit sequencing for Ontario’s building department, keeps material lead times moving, and makes sure the roofer and the tile crew aren’t stepping on each other. For projects where you’d otherwise juggle four or five separate contractors, the full-scope GC model is the cleaner path. Details are on the General Contractor in Ontario page.
Home Remodeling in Ontario
Ontario’s older tract homes were built for the family sizes and appliance footprints of the 1960s and 70s. A remodel here usually means reworking kitchens that were never designed for modern cabinets, opening up living spaces, and upgrading bathrooms that have seen decades of hard use. We plan remodels around the realities of slab foundations, existing wall layouts, and the region’s stucco exteriors, so the new work looks like it belongs rather than like it was bolted on. Material selection, layout planning, and the full construction process are covered on the Home 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.
Home Renovation in Ontario
A home renovation in Ontario means working with houses built fast in the postwar boom, where original electrical panels are undersized, plumbing is a mix of galvanized and early copper, and the stucco has been baking in the Inland Valley sun for half a century. Renovation here is as much about correcting what’s behind the walls as it is about the finish work you see. Millwright’s Home Renovation service covers whole-home scopes, from structural fixes and envelope upgrades to kitchens, baths, and additions, under one contract and one project lead.
Home Renovation Contractors
Signs you need it
You’re planning a project that touches three or more trades, or you’ve been told by separate specialists that your electrical, plumbing, and framing all need work before the remodel can start.
What it costs in Ontario
A full home renovation in Ontario typically runs $45,000 to $130,000 depending on the square footage, how much structural work surfaces once walls are opened, and the finish level you select.
How we do it
We start with a walkthrough and scope review, map the structural and systems work against your finish goals, produce a written line-item estimate, then run the permits, trades, and inspections through to final walkthrough.
Home Improvement Contractors
Signs you need it
The house works but feels worn out: original 1960s baths, a kitchen that hasn’t been touched since the Carter administration, and finishes that don’t match how you actually live now.
What it costs in Ontario
Whole-home improvement scopes vary widely, but the projects we see cluster between $45,000 and $130,000 when they span more than two rooms, with kitchens at $14,000-$45,000 and baths at $9,000-$28,000 inside that larger number.
How we do it
We phase the work so you’re not living in a full construction zone longer than necessary, sequence the noisy and dusty phases together, and keep the same crew lead from demolition to punch list.
What Home Renovation Costs in Ontario
| Item | Typical range in Ontario |
|---|---|
| Kitchen remodel | $14,000 – $45,000 |
| Bathroom remodel | $9,000 – $28,000 |
| Home addition | $45,000 – $130,000 |
How long does a whole-home renovation take in Ontario?
A full-home renovation typically runs 4 to 8 months depending on scope, permit review, and whether structural surprises surface once walls are open. Kitchens alone usually finish in 6 to 10 weeks. Call (866) 925-0334 for a timeline based on your specific project.
Do I need permits for a home renovation in Ontario?
Yes for anything touching structure, electrical, plumbing, or the building envelope. Millwright pulls all required permits and schedules the inspections as part of the contract. We handle the Ontario building department process so you don’t have to navigate it yourself.
Brands We Service in Ontario
Millwright Builders works with 50+ vetted manufacturers, and for Ontario projects we regularly specify Quikrete and Sakrete concrete products for slabs, footings, and hardscape, Abodu for prefabricated ADUs, and Oldcastle pavers for driveways and patios. Material parts and samples ship to Ontario suppliers quickly, so selection meetings rarely stall a schedule. See our brands for the full list.
See the difference
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AfterPricing for Remodeling Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Small kitchen remodel | $9,000 – $20,000 |
| Countertop installation | $2,000 – $6,500 |
| Small bathroom remodel | $5,000 – $12,000 |
| Walk-in shower installation | $4,500 – $12,000 |
| Paver patio installation | $3,500 – $11,000 |
| Roof replacement | $8,000 – $20,000 |
| Window replacement | $4,500 – $15,000 |
| Vinyl fence installation | $3,500 – $9,000 |
| Garage conversion | $30,000 – $80,000 |
| ADU construction | $90,000 – $220,000 |
What pushes prices up in Ontario: soils and utilities surprises on former citrus land around 91761, the need for HVAC-capacitated additions during Inland Valley summers, and any structural work on older slabs. Every Millwright estimate is a written line-item quote, so the number you approve is the number you pay, unless the scope changes in writing.
Neighborhoods We Serve in Ontario
Millwright Builders serves all four Ontario ZIP codes: 91758, 91761, 91762, and 91764. The older tract neighborhoods of 91762 and 91764 are where we see the most renovation and roof work, while 91761 brings larger-lot and newer-build projects with different soil and utility conditions.
- Old Town Ontario
- Wilcox Ranch area
- Woodcrest
- Creekside West
- Archibald Ranch
Response for estimates across Ontario typically runs within a few business days, depending on the season and current project load.
Service Area – Cities Near Ontario
Millwright Builders also serves homeowners in the surrounding Inland Valley communities. If your project is in Montclair, CA, Upland, CA, San Antonio Heights, CA, or Claremont, CA, the same single-contract GC model applies. We route the same crews and the same material network to those cities, so scheduling works the same way it does in Ontario.
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 Remodeling Company in Ontario
Yes. Millwright pulls all required permits for structural, electrical, plumbing, and envelope work and schedules inspections with the Ontario building department. We carry the permit coordination as part of the contract, not as an add-on, and we don’t start covered work without the permit in hand.
Yes. Most of the 1950s-70s tract homes in 91762 and 91764 sit on slab-on-grade foundations, and we plan drain moves, bath additions, and utility upgrades around that reality from the first walkthrough. Slab work is slower and dustier, but it’s standard practice for our crews in Ontario.
Schedule lead time varies by scope and season, but most Ontario projects can start within a few weeks to a couple of months after the estimate and material ordering are complete. Call (866) 925-0334 for current scheduling on your specific project type.
Ready to talk through your Ontario project? Call Millwright Builders at (866) 925-0334 for a free estimate. We’ll walk the property, ask the right questions, and send you a written line-item scope and price.
What happens when you call
- 1A real person answersNo phone trees — talk to a local construction 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
"Weekly site meeting, every week, with a written summary afterward. I always knew where the money and the schedule stood."
— Eduardo Torres"Excellent build. Costs came in about six percent over the original contract, driven mostly by material price movement during the build, which he documented each time."
— Priya Mehta"Framing crew was meticulous and the walls are straight everywhere. Drywall goes on a lot better when the framing is right."
— Bryce Hayes