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 means working with a housing stock built mostly between 1950 and 1980, when slab foundations and single-story stucco ranch homes were the standard. Those homes carry a specific set of conditions: original cast-iron plumbing, aging electrical panels, and floor plans that need rethinking for how families live now. Gold Star Contractors has served Ontario since 2012, managing full-scope renovations from kitchens and baths to additions and ADUs, with one project team accountable across every trade. Call (833) 382-8544 to schedule a free estimate.
Why Ontario Homes Are Different
Ontario sits where the Santa Ana winds come through the Cajon Pass, and that wind shapes how exterior work gets scheduled and what materials hold up. Roofing crews in Ontario plan around wind events that can tear underlayment and delay shingle work. Interior projects have their own local rhythm: summers inland run hot and dry, so we schedule demo and heavy work in the early morning hours whenever possible. The older core around Euclid Avenue and Holt Boulevard, along with the 91761 and 91762 ZIP codes, is dominated by ranch homes on slabs with original cast-iron or galvanized supply lines. When we open walls in those homes, we regularly find plumbing that’s been failing quietly for decades and electrical panels that were sized for a 1960s household. The newer neighborhoods east of the 15 and around 91764 present a different set of conditions: tract-built homes from the 1980s and 1990s with fewer hidden surprises but floor plans that often need opening up. Ontario’s tilt-up warehouse economy means the city also has a steady supply of older homes near downtown where owners are weighing renovation against replacement. That’s the split we see every week: mid-century homes that need thoughtful retrofit work, and newer builds that need reconfiguration. Neither job should be handled by a contractor who only does one trade. The coordination matters here – a kitchen remodel in an Ontario ranch home can easily uncover foundation work, plumbing replacement, and electrical upgrades before the cabinets ever go in. Having a single team that can manage all of it without stopping the project is the difference between a six-week renovation and a six-month stall.
Styles & brands we work with
Our Main Ontario Services
Two services drive most of the calls we take from Ontario homeowners: full-scale general contracting and whole-home remodeling. Here’s how each works in this city.
General Contractor in Ontario
Acting as the General Contractor in Ontario means we hold the license, pull the permits, and coordinate every trade on a project. For Ontario homeowners that’s especially valuable on older ranch homes, where a kitchen remodel can require foundation assessment, plumbing replacement, electrical service upgrades, and drywall work across multiple rooms. One accountable team means there’s no phone tag between a plumber and an electrician when a scope change comes up mid-project. We manage material deliveries, inspections, and the schedule so the work proceeds in a logical order rather than stalling between trades.
Home Remodeling in Ontario
Home Remodeling in Ontario typically means reworking the original layout of a 1950s-to-1970s home to function for a modern household. That could be opening a galley kitchen into a living space, adding a second bathroom where none existed, or converting a den into a primary suite. Ontario’s older slab foundations add a layer of complexity: moving plumbing walls on a slab requires cutting concrete, which is exactly the kind of work that catches a single-trade contractor off guard. Our team plans for it, prices it upfront, and does the cutting and patching in-house rather than pausing the job to bring in a sub.
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
Home renovation in Ontario most often means bringing a mid-century ranch up to current standards, and the condition of the original systems drives the scope. Homes in the 91761 and 91762 ZIP codes frequently have original cast-iron drain lines under the slab and electrical panels that can’t support a modern kitchen, so we plan renovations around those realities instead of discovering them after the demo crew leaves. Dry Santa Ana winds may spare Ontario homes from the rot and mold that coastal cities fight, but the heat and ultraviolet exposure take a toll on stucco, exterior paint, and roofing. A full-scope renovation here is a systems upgrade as much as a cosmetic one. Our Home Renovation approach treats the house as one connected system: we assess the foundation, plumbing, electrical, insulation, and envelope before the first finish material is ordered.
Home Renovation Contractors
Signs you need it
Your Ontario ranch home has original galvanized plumbing, a 100-amp panel, or floor plan walls that block how your family actually lives.
What it costs in Ontario
Full home renovation in Ontario typically ranges from $45,000 – $130,000 depending on square footage, system replacement scope, and finish level.
How we do it
We assess the slab, plumbing, and electrical first, build a line-item scope with brand-specific finishes, then manage every trade, permit inspection, and delivery through completion.
Home Improvement Contractors
Signs you need it
You’re juggling separate bids for a kitchen, a bath, and exterior work, and none of the contractors know what the others are doing.
What it costs in Ontario
A coordinated multi-room improvement project in Ontario commonly lands between $14,000 for a single kitchen and $130,000 for whole-home scope.
How we do it
We consolidate the trades under one schedule, specify each finish brand before work begins, and keep the project moving without gaps between electrical, plumbing, drywall, tile, and paint.
Renovation Contractors
Signs you need it
The home needs interior and exterior work at the same time: roof, windows, siding, and a remodeled interior, all competing for attention.
What it costs in Ontario
Renovation projects that combine interior and exterior systems in Ontario typically run $14,000 – $45,000 for a kitchen and $8,000 – $20,000 for a roof replacement.
How we do it
Our team sequences exterior envelope work first to protect the interior, then moves inside for demolition, rough-in, finish work, and final inspections.
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 home renovation take in Ontario?
Most full renovations in Ontario run 8 to 16 weeks, with older slab homes taking longer when plumbing or electrical replacement is required. Permit review through the City of Ontario adds about 2 to 4 weeks before work begins. Call (833) 382-8544 for a schedule estimate on your specific scope.
Will the price change once renovation work starts in Ontario?
No, not unless you change the scope. We price from a line-item scope with brand-specific materials, so what we quote is what you pay. Ontario slab homes occasionally reveal hidden conditions during demo, and we address those through a documented change order before any added work begins. Call (833) 382-8544 for a written estimate.
Brands We Service in Ontario
We work with more than 50 manufacturer brands across cabinetry, countertops, roofing, windows, doors, fencing, hardscaping, and prefab structures. For Ontario projects we frequently specify Cambria and Caesarstone countertops, KraftMaid cabinetry, GAF roofing, and PGT impact windows, ordered directly through our supplier network rather than big-box distribution. Visit our brands to see the full catalog.
See the difference
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AfterPricing for Remodeling Company in Ontario, CA
| Service | Typical range in Ontario |
|---|---|
| Kitchen remodel | $14,000 – $45,000 |
| Small kitchen remodel | $9,000 – $20,000 |
| Cabinet installation | $4,000 – $13,000 |
| Countertop installation | $2,000 – $6,500 |
| Backsplash installation | $800 – $2,500 |
| Bathroom remodel | $9,000 – $28,000 |
| Walk-in shower installation | $4,500 – $12,000 |
| Roof replacement | $8,000 – $20,000 |
| Window replacement | $4,500 – $15,000 |
| Paver patio installation | $3,500 – $11,000 |
| Home addition | $45,000 – $130,000 |
| ADU construction | $90,000 – $220,000 |
In Ontario, prices push toward the higher end of these ranges when a slab foundation requires plumbing relocation, when a 1950s-era panel needs a service upgrade, or when Santa Ana wind windows force roofing and exterior crews to re-sequence work. Every estimate we give is a written, line-item price built from brand-specific materials, so you’ll know exactly what you’re paying before the first wall is opened.
Neighborhoods We Serve in Ontario
Our Ontario work spans the older core around Euclid Avenue and Holt Boulevard, the mid-century tracts west of the 15, and the newer subdivisions pushing east toward the 91764 ZIP code. Response time for estimates across Ontario is typically 24 to 48 hours.
- Downtown Ontario
- Creekside
- Euclid Corridor
- Ontario Ranch
- Archibald Ranch
Service Area – Cities Near Ontario
Gold Star Contractors serves homeowners across the Inland Empire’s Inland Valley, including Montclair, CA, Upland, CA, Chino, CA, and San Antonio Heights, CA. If you’re just outside Ontario, call (833) 382-8544 and we’ll confirm coverage for your street.
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
Most Ontario projects begin with a free on-site estimate within 24 to 48 hours of your call. After you approve the line-item quote, we pull permits through the City of Ontario, which typically takes 2 to 4 weeks, then start the work as soon as the permit is issued. Call (833) 382-8544 to schedule your estimate.
Yes. We pull all required City of Ontario building permits and coordinate the inspections that follow each phase of work. If your Ontario neighborhood has an HOA with architectural review requirements, we prepare the drawings and documentation the review committee needs. Call (833) 382-8544 to talk through your project’s approval path.
Yes, that’s the majority of what we renovate in Ontario. Homes in the older core around the 91761 and 91762 ZIP codes sit on slab foundations that require concrete cutting to relocate plumbing. We handle that work in-house, not through a sub, so the schedule and price stay under our control. Call (833) 382-8544 for an estimate on your older Ontario home.
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."
— Andre Robinson"Framing crew was meticulous and the walls are straight everywhere. Drywall goes on a lot better when the framing is right."
— Alicia Dawson"Every inspection passed first time. The building department clearly knows him and that made the whole process easier."
— Gilbert Flores