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 General Contractor Across Ontario
Square Deal Contractors handles full-scope general contracting across Ontario, from kitchen and bath remodels in the older 91762 tracts to whole-home renovations in newer 91761 and 91764 subdivisions. We know the Ontario market because we work here constantly, which means we understand the builder-warranty rules, HOA restrictions, and finish packages that shape nearly every project in this city. Call (866) 623-7205 for a free estimate and we’ll tell you exactly what you’re getting and why.
One contractor, every phase. That’s the square deal.
Why Square Deal Contractors Is Ontario’s Preferred General Contractor Company
Ontario homeowners call us because they don’t want to chase three different trades for one renovation. We started as a full-scope General Contractor operation precisely because the alternative, hiring a cabinet guy, a countertop shop, and a roofer separately, breaks down fast on a real remodel. Our clients in Ontario get one accountable point of contact from structural work to finish work.
We work with more than 50 recognized industry brands, which means we’re not bending your project around one supplier’s inventory. Need Sterling fixtures in a guest bath and Grohe in the primary? Fine. GAF shingles on the roof and CertainTeed trim on the eaves? Done. The right material for your project and your budget, not whatever happens to be on a warehouse shelf.
Nolan Breckett built Square Deal Contractors on a simple operating rule: the estimate is the plan, and the plan doesn’t change without a written change order you signed first. No runaround, no surprise invoices. Ontario homeowners who’ve been through a bad remodel before understand exactly why that matters.
Styles & brands we work with
Residential General Contractor in Ontario
Residential General Contractor work in Ontario splits across two very different housing stocks. The older postwar tracts around 91762 and 91764 tend to have galvanized plumbing, original stucco, and electrical panels that run out of room fast. The newer infill subdivisions ringing 91761 and the eastern edge of 91764 are filled with builder-grade finishes that owners replace within the first five years. A residential general contractor here has to know which clock the customer is on. A two-year-old home needs cabinet and countertop upgrades without voiding the builder warranty. A 1962 ranch needs a full kitchen gut and probably a service panel upgrade at the same time. Typical kitchen remodels in Ontario run $14,000 – $45,000, with small kitchens starting around $9,000 – $20,000.
Builder-Grade Finish Upgrades
The most common call we get from Ontario’s newer subdivisions is a straight swap: builder-grade cabinets, laminate tops, and contractor-pack fixtures out, better materials in. We sequence this so the original rough-in stays put and the appliance openings don’t move. That matters for warranty protection. KraftMaid cabinet installation plus a Cambria or Caesarstone top is the most requested combination.
Whole-Home and Scoped Remodels
For older Ontario homes, the project usually runs deeper than finishes. A full bath remodel in the 91762 core often involves replacing cast-iron drain lines while the walls are open. That’s not a surprise expense if your contractor planned for it. We scope what’s visible and flag what’s likely before the first swing of a hammer, so you’re budgeting for reality rather than a demo-day surprise.
Hire a General Contractor in Ontario
Hire a General Contractor in Ontario for any project that touches more than one trade. That’s the threshold. If you’re changing plumbing, electrical, structure, and finish in one room, you’re managing a general contracting project whether you planned to or not. We see Ontario homeowners try to coordinate a kitchen remodel themselves, and it usually unravels around week three when the countertop template doesn’t match the cabinet run and the electrician can’t get back for two weeks. Our job is to keep that from happening. Kitchen remodels run $14,000 – $45,000 in Ontario, bathrooms $9,000 – $28,000, and home additions $45,000 – $130,000 depending on square footage and site conditions.
Warranty and HOA Compliance
In Ontario’s master-planned communities, we pull the HOA architectural packet before we quote finish or exterior changes. That’s not optional. Skipping architectural review has cost Ontario homeowners real money when the HOA forced them to reverse a change. We handle it from the start.
Permits and Inspections
We pull permits and we’re on-site for inspections. No homeowner should be signing inspection cards themselves. For additions and ADUs in Ontario, the city’s plan-check cycle can stretch, so we stage the scope to keep the project moving while the permit works through the system.
Trusted Brands We Service in Ontario
Ontario customers get access to our full brand portfolio, not a truncated list. Sterling and Grohe plumbing fixtures, GAF roofing systems, CertainTeed siding and trim, Cambria and Caesarstone countertops, Kohler, KraftMaid, Wellborn, and dozens more. We keep local availability in mind when we spec materials for Ontario jobs, because a three-week lead time on a faucet kills a punch list. When a brand fits the project and the timeline, we use it. When it doesn’t, we say so. We’ll tell you exactly what you’re getting and why.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Ontario Homes
- Builder warranty voided by unpermitted work. On newer Ontario homes, we’ve seen warranty claims denied because an owner changed plumbing or electrical without a permit. The warranty language is specific about who can touch what. We read it before we swing a hammer.
- HOA architectural violations on finish swaps. In master-planned Ontario subdivisions, even paint color and window trim can require architectural review. We pull the packet first so you don’t pay twice.
- Builder-grade tear-outs that bite back. Some Ontario builder packages use non-standard cabinet sizing or thin drywall. If your contractor assumes standard measurements, the replacement won’t fit. We measure everything before ordering.
- Drainage and grading failures on flat lots. Ontario’s flat Inland Empire terrain and dry summers mean a lot of homes have marginal drainage. Winter rains expose it. We check lot grading on any project that touches a foundation or exterior wall.
Pricing for General Contractor in Ontario, CA
Here’s what Ontario homeowners should expect for common first-upgrade projects. These ranges reflect recent work in the Ontario market and include materials, labor, and the general contractor’s coordination. Your final number depends on square footage, material tier, and whether structural or utility changes are needed.
| Project Type | Typical Ontario Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
Every estimate is written, line-itemed, and explained before you sign. Call (866) 623-7205 to schedule a free estimate.
We Also Serve Cities Near Ontario
Beyond Ontario, Square Deal Contractors regularly works in Montclair, Upland, Chino, and San Antonio Heights. Each city has its own permitting rhythm and housing stock, and we’re familiar with all of them. If you’re in a neighboring community planning a remodel, the same transparent estimating process applies.
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 General Contractor in Ontario
No, upgrading finishes like cabinets, countertops, and fixtures typically won’t void the builder warranty if the underlying structure and systems are untouched and all required permits are pulled for anything that needs them. The warranty covers structure, electrical, plumbing, and HVAC. Changing finishes doesn’t void those coverages. What voids coverage is unpermitted modification to load-bearing walls, rough plumbing, or rough electrical. We review your specific warranty language before any work starts. Call (866) 623-7205 and we’ll walk your project against your warranty terms.
Yes, in most Ontario master-planned subdivisions you need architectural review approval before any exterior changes, and some HOAs also require notice for interior work that affects structural elements or noise windows. We pull the architectural packet early because HOA review timelines can add two to six weeks to a project start. Better to file early than to reverse finished work.
Plan on $9,000 – $20,000 for a small kitchen refresh, $14,000 – $45,000 for a full kitchen remodel, $4,000 – $13,000 for cabinet installation, and $2,000 – $6,500 for countertop installation. Bathrooms typically run $9,000 – $28,000. These are Ontario market ranges based on what we’ve bid and built here. Your exact number comes from the scope we write together.
We write the surprise into a formal change order, with a defined scope and price, and you approve it in writing before we proceed. No verbal cost overruns. No surprises at the final invoice. That’s the entire point of the Square Deal name.
Yes. We pull all required permits for additions and ADUs in Ontario and we’re on-site for every inspection. Home additions in Ontario typically run $45,000 – $130,000, and ADU construction generally $90,000 – $220,000. We handle plan check, inspections, and final sign-off so you never touch a city form. Call (866) 623-7205 for a free estimate on your specific project.
Written by Nolan Breckett, Owner at Square Deal Contractors, serving Ontario and the Inland Empire.