General Contractor in Ontario - Written Fixed-Price Quotes, Permits Handled

Professional General Contractor Serving Ontario, CA

A general contractor in Ontario coordinates every trade, permit, and inspection so you aren’t juggling a roofer, a cabinet installer, and a paving crew on your own. Sundance Contractors handles the full scope, interior and exterior, under one contract. Call (877) 752-3951 to talk through your project and get a free estimate.

Call (877) 752-3951

We work throughout Ontario’s 91762, 91764, 91798, and 91758 ZIP codes, from the mid-century tracts south of the 10 to the newer master-planned communities pushing east. If you’re planning a kitchen remodel, a room addition, or an ADU in Ontario, you want someone who already knows what’s behind these walls, and what the city will ask for once the permit is pulled.

Fast, Reliable General Contractor Across Ontario

Ontario is a big city with a lot of housing variety, from 1950s stucco-and-slab ranches near Euclid Avenue to newer two-story builds east of the 15. Most homeowners here call us for two reasons, a substantial remodel (kitchen, bath, or whole-home) or a new living space like an ADU, garage conversion, or room addition. Our General Contractor team manages every phase, demolition, rough-in, finish work, and the final inspection sign-off.

Lead times matter in Ontario. Between Santa Ana wind events off the Cajon Pass and summer heat that pushes crews to early starts, scheduling around local conditions is part of the job. We know the sequence that keeps a project moving here, roof work scheduled before high-wind season, exterior stucco and concrete work ordered around dry heat, not against it. That local rhythm is why Ontario homeowners call us. And when they do, they reach Noel Carranza and his team directly.

Call (877) 752-3951 and we’ll schedule a walkthrough at your Ontario property.

Why Sundance Contractors Is Ontario’s Preferred General Contractor Company

Ontario homeowners tell us the same thing: they tried managing separate trades once, and they won’t do it again. One license, one contract, one team, that’s what keeps a remodel from turning into a second job. Sundance Contractors carries that single-point accountability across every category we touch, cabinets, countertops, roofing, windows, hardscape, and ADUs.

The brand access matters too. We specify KraftMaid and Wellborn cabinets, Cambria and Silestone surfaces, and GAF and Owens Corning roofing systems. These aren’t generic picks, they’re the product lines that hold up in Ontario’s dry heat and wind. And for ADUs, our partnerships with Abodu, Dvele, and Mighty Buildings mean Ontario homeowners can put a factory-built structure on a single-family lot without acting as their own project manager.

Most important is how we handle what we find once walls are open. We’ll get to that below, because in Ontario’s older housing stock, it’s the difference between a quote that holds and one that unravels.

Residential General Contractor in Ontario

A residential general contractor in Ontario manages the remodel or addition from permit to punch list. We schedule the city inspections with Ontario’s Building Department, coordinate every subcontractor, and keep one written contract for the entire scope. For a homeowner in 91762 or 91764, that means you approve changes once and someone else keeps the schedule moving.

Typical Ontario pricing: a kitchen remodel runs $14,000 – $45,000, a bathroom remodel $9,000 – $28,000, and a home addition $45,000 – $130,000, depending on scope, finish level, and what the existing structure requires once it’s opened up.

Remodels and Additions

We build for the way Ontario homes are actually constructed. Mid-century slab foundations, stucco exteriors, and undersized framing all affect how a remodel gets sequenced. We price with those realities in the contract, not as surprises later.

ADUs and Garage Conversions

Ontario’s single-family lots, especially the larger parcels in 91758 and along the city’s eastern edge, are prime candidates for an ADU or a garage conversion. ADU construction typically runs $90,000 – $220,000 here, and a garage conversion $30,000 – $80,000. We manage the site work, foundation, utility connections, and the final inspection.

Hire a General Contractor in Ontario

When you hire a general contractor in Ontario, the real value shows up when the permit triggers code upgrades. Open a wall in a 1964 home and you may find cloth-wrapped wiring that no longer meets current code. The city inspector flags it, and now your remodel includes a panel upgrade or a rewire you didn’t plan for. We write allowances for exactly this into the contract.

On expansive soils, cracked slabs and foundation movement are common in the central ZIPs. If demolition reveals structural issues, we stop, price the repair in writing, and get your approval before proceeding. That’s not an upsell, it’s how a remodel passes inspection without the draw schedule stalling.

Written Allowances, Not Open-Ended Change Orders

Every contract includes a line-item allowance for the unknowns most Ontario homes carry: electrical updates, framing corrections, and waterproofing repairs. Surprises get priced and signed off before we touch the rough-in.

Permit and Inspection Management

We pull the permits, schedule the inspections, and stand with the inspector until the sign-off. You get one point of contact for every phase, from the first demo day to the final walkthrough.

Trusted Brands We Service in Ontario

We carry the brands worth specifying, and we service them locally for Ontario customers. James Hardie siding and trim hold up to Inland Empire sun and wind better than most alternatives, which is why we specify it on exterior projects across Ontario. For prefab structures and ADUs, we work directly with Plant Prefab and Boxabl, two manufacturers building factory-quality units that arrive on-site ready for foundation, utility, and finish work. Need a detached office or studio? We install Tuff Shed structures on Ontario lots, engineered and permitted as accessory structures where the city allows them.

Common General Contractor Problems We See in Ontario Homes

• Expansive soil movement under slab foundations. Central Ontario sits on Inland Empire soils that swell and shrink with moisture. Once walls are opened, we often find slab cracks that require a structural repair before finish work can proceed.
• Undersized load-bearing framing from the 1950s and 60s. Many post-war tract homes in 91762 and 91764 were framed to older standards. When a wall comes down for an open-concept kitchen, the framing doesn’t always pass the current structural review.
• Outdated electrical that fails code once the panel is exposed. Ontario inspectors won’t sign off a remodel attached to cloth-wrapped wiring or an undersized panel. We include the panel and rewiring allowance in the contract so it’s not a surprise at inspection time.
• Wind-driven roof and flashing damage from Santa Ana events. Persistent winds off the Cajon Pass find weak flashing and aged shingles. Remodels that touch the roofline often need a repair scope added before the drywall goes back up.

Pricing for General Contractor in Ontario, CA

We Also Serve Cities Near Ontario

Sundance Contractors serves homeowners across the western Inland Empire, including General Contractor in Ontario and the surrounding communities of Montclair, Chino, Los Serranos, and La Verne. If you’re nearby and planning a remodel, addition, or ADU, the same team and the same process applies.

FAQs About General Contractor in Ontario

One True Local Insight: Ontario’s Expansive Soils

The postwar stucco-and-slab homes in ZIPs 91762 and 91764 often sit on expansive Inland Empire soils, so once walls are opened for a remodel, we frequently find cracked slabs and foundation movement that forces a structural repair before any finish work can proceed. We recently opened up a 1960s stucco-and-slab ranch in the 91762 ZIP near Euclid Avenue for a kitchen remodel and uncovered a subfloor with old termite damage plus undersized load-bearing framing that failed the city inspector’s initial sign-off. After pulling permits, we wrote a change order for new framing and a reinforced subfloor, priced it in writing, and got the homeowner’s approval before we touched the rough-in. That’s how a quote stays honest and a project stays on schedule in Ontario.

Call Sundance Contractors for Your Ontario Project

Planning a remodel, addition, or ADU in Ontario? We’ll walk the property, talk through what we expect to find, and write an estimate that covers it. Call Noel Carranza and the team at (877) 752-3951 to schedule your free estimate, or reach out through the site. One contractor, every phase, from first inspection to final sign-off.

Written by Noel Carranza, Owner at Sundance Contractors, serving Ontario and the western Inland Empire.