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
Fast, Reliable Home Remodeling Across Ontario
A full home remodel in Ontario typically runs $45,000 – $130,000, depending on scope, materials, and how much structural work the existing framing needs. Kitchen remodels land between $14,000 and $45,000, bathrooms $9,000 to $28,000. If you’re planning a large-lot postwar tract home upgrade or an ADU off the 15/60 corridor, call (877) 752-4194 and we’ll give you a written line-item estimate before any work starts.
We know Ontario’s housing stock. The single-story stucco homes off Euclid and Holt, the newer subdivisions pushing east toward the 15, the big lots around Ontario Ranch where ADUs make sense. Our team works here weekly and understands what these homes throw at you when you open up a wall.
Key Takeaways
- Ontario’s fall Santa Ana winds funneling through the Cajon Pass peel back shingles and lift lightweight patio covers on 1940s – 70s tract roofs. Our remodel specs here hinge on wind-rated fastening and edge metal, not coastal salt corrosion.
- Full home remodels in Ontario run $45,000 – $130,000. Kitchens $14,000 – $45,000. Bathrooms $9,000 – $28,000.
- The 1950s single-story stock on large lots means galvanized plumbing, shallow slab foundations, and lath-and-plaster walls that complicate additions and tie-ins.
- We’re a full-scope general contractor with single-contract accountability. Roof, windows, pavers, fencing, and the kitchen remodel are all under one point of contact.
- Free estimates. Call (877) 752-4194.
Styles & brands we work with
Why Milpitas Construction Is Ontario’s Preferred Home Remodeling Company
We’re one of the few general contractors working Ontario with active access to 50+ brand-name product lines across every trade. Cambria countertops, Kohler fixtures, James Hardie siding, GAF roofing. We spec materials by name, so you know exactly what’s going into your home. That matters when you’re spending $60,000 on a remodel and don’t want to play phone tag between a cabinet supplier and a roofer.
Ken Stafford leads the team. He’s walked dozens of Ontario properties, from the aging tract homes near Chaffey High to the new builds south of the 60. He knows which questions to ask before the demo starts, and which local inspectors will look hardest at shear wall and Title 24 compliance. You don’t get that from a guy who crosses the county line for one job and never comes back.
Ontario homeowners deal with specific conditions: Cajon Pass wind, summer heat pushing past 100°F, older slab foundations, aging galvanized supply lines. We’ve worked through all of it and built our material specs around it.
Call (877) 752-4194 for a free estimate. You’ll talk to a person, not a call center.
Luxury Home Remodeling in Ontario
Luxury home remodeling in Ontario on a large postwar lot usually means a full interior gut with high-end surface materials, new systems, and often a structural wall move or ceiling change. Budget for $45,000 to $130,000 depending on the square footage and how far you take the finish level. The Ontario version of luxury is different from the coastal version. Here, the money goes into wind-rated exterior details, sealed paver joints, and materials that survive real heat load.
Interior finish packages
We build the finish spec around brands that hold up: Cambria or Caesarstone countertops, Kohler or Grohe plumbing fixtures, KraftMaid or Wellborn cabinetry. You choose the tier, we handle the install. No big-box guesswork.
Exterior-to-interior continuity
On a luxury remodel, the outside and inside need to work together. The same crew managing your paver patio and patio cover should also be the crew managing the kitchen. One contract, one point of contact. When the cover framing is wind-rated and the paver joints are sealed, the interior project doesn’t get water intrusion six months later.
Full Home Remodel in Ontario
A full home remodel in Ontario touches every room, which means every system underneath. In the 1940s – 1970s tract stock that dominates this city, that means replacing galvanized supply lines, upgrading electrical panels, addressing shallow slab edges, and bringing the whole envelope up to current Title 24 standards. Expect $45,000 to $130,000 for a true full-scope remodel. Additions push into the same range or higher, depending on square footage.
Systems and structure first
We open the walls and find what’s actually there. On a 1950s single-story on a large lot off the 15/60 corridor, we opened a load-bearing wall and found original galvanized plumbing and shallow slab edges. We rough-in new copper and PEX, tied new framing to current seismic and Title 24 standards, and spec’d hot-dip galvanized roof fasteners and sealed paver joints against the Cajon Pass wind uplift. The punch list closed clean after inspection sign-off. That’s the job.
Finishes and fixtures second
Once the structure is right, we move to the finish spec. Cambria, Silestone, or Caesarstone counters. Kohler or Grohe in the baths. Therma-Tru doors, PGT or ECO Windows for impact-rated glass. We spec materials by name because cheap finishes on a correctly built shell is wasted money.
Trusted Brands We Service in Ontario
We stock and install across 50+ brand-name product lines, and Ontario homeowners get the same access as anyone else. Cambria and Caesarstone countertops, Kohler fixtures, James Hardie siding, GAF or CertainTeed roofing. We’re not married to one manufacturer. We pick the product that fits the job, the lot, and the wind exposure. For Ontario’s hot summers and Santa Ana events, that often means impact-rated windows, hot-dip galvanized fasteners, and sealed paver systems from Belgard or Techo-Bloc. We service the equipment, honor the warranties, and keep parts available for Ontario customers who need a covered fix without waiting on a distributor.
See the difference
Before
After
Before
After
Before
AfterCommon Home Remodeling Problems We See in Ontario Homes
- Wind-lifted shingles and patio covers on 1940s-70s tract roofs. Standard electroplated fasteners corrode and loosen, and the fall Santa Ana events through the Cajon Pass finish the job. We spec hot-dip galvanized or stainless fasteners with proper edge metal.
- Galvanized supply lines and original cast iron or early copper plumbing. Most Ontario tract homes built before 1980 need full rough-in replacement when we open walls for a remodel. Tying new PEX or copper to old galvanized is a leak and pressure problem waiting to happen.
- Shallow slab foundations with poor perimeter drainage. Winter rains on flat or poorly graded slabs push water toward stem walls. We see subfloor damage and efflorescence on older stucco homes near Ontario’s older neighborhoods.
- Thin vinyl or aluminum fence posts racked by wind on large-lot properties. Cheap posts lift and lean within a few years. We set deeper concrete footings and use heavier-gauge framing, especially on open lots where the wind has a clear run.
Pricing for Home Remodeling in Ontario, CA
Here’s what our Ontario homeowners actually pay, based on current job scope. These are line-item ranges, not ballpark guesses.
| Project | Ontario Price Range |
|---|---|
| Full Home Remodel | $45,000 – $130,000 |
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Roof Replacement | $8,000 – $20,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
What moves the number? Structural tie-ins on old slabs, rough-in replacement for galvanized plumbing, impact-rated glass, the finish tier you choose. The wind-rated inland spec costs more up front than a cheap electroplated fastener job, but the cheap spec fails within a decade. We’ll give you a written line-item estimate before you sign anything. Call (877) 752-4194.
We Also Serve Cities Near Ontario
We work across the Inland Empire and into the surrounding foothill communities. If you’re in Ontario or nearby, we cover Home Remodeling projects in Montclair, Upland, Chino, and San Antonio Heights. Same team, same single-contract accountability.
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 Home Remodeling in Ontario
Yes. Ontario sits in the direct path of Santa Ana winds funneling through the Cajon Pass every fall, and those winds peel back shingles and lift lightweight patio covers on the 1940s – 70s tract roofs we see all over the city. We spec hot-dip galvanized or stainless fasteners, upgraded edge metal, and wind-rated cover framing instead of standard electroplated hardware. The upgrade costs more up front, but the cheap spec loses shingles and racks patio posts within a few years. Call (877) 752-4194 for a written wind-rated spec on your roof or cover.
You should plan to replace all galvanized supply lines as part of the remodel. Most Ontario tract homes from that era have original galvanized or early copper that’s at the end of its life, and tying new PEX or copper into it creates pressure drops and leak points at the joints. We rough in new copper or PEX, replace the angle stops and shutoffs, and pressure-test the system before walls close. It’s a line item, not an option. Call (877) 752-4194 and we’ll put it in the written estimate.
Yes. The City of Ontario requires permits for room additions, garage conversions, structural wall moves, and electrical or plumbing scope changes. We pull permits on every job that requires them, and we schedule inspections with the city directly. Working without a permit on a large Ontarioproperty means a red tag at the worst possible time and trouble when you sell. We carry the permit package and inspection sign-off as part of the contract.
Expect the wind-rated spec to add roughly 10 – 15% to the roof or patio cover portion of the job. Hot-dip galvanized fasteners, upgraded edge metal, and heavier cover framing cost more than electroplated nails and thin aluminum posts. But in Ontario’s Cajon Pass wind zone, the cheap spec peels shingles and racks posts within five to ten years, and the repair ends up costing more than the original difference. Call (877) 752-4194 and we’ll break out the exact cost difference on your project.
Yes. Ontario has a huge stock of detached garages on larger lots that map directly to California’s SB 9 and ADU rules, and a garage conversion is one of the fastest paths to a rentable or family unit. We work with modern prefab manufacturers like Abodu, Dvele, and Plant Prefab for ADU construction, and we’ve converted plenty of standard two-car detached garages. Budget $90,000 to $220,000 for a full ADU, or $30,000 – $80,000 for a garage conversion that keeps the existing shell. We pull permits, set the foundation, tie in utilities, and close out with city sign-off.
Call Milpitas Construction at (877) 752-4194 to schedule your free estimate for home remodeling in Ontario, CA. We’ll walk the property, check the existing systems, and give you a written line-item quote with real material brands and real dollar figures. No obligation, no pressure.
Written by Ken Stafford, Owner at Milpitas Construction, serving Ontario since day one.