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
Hiring a General Contractor in Ontario means finding someone who understands the 1950s and 60s stucco ranches that fill the neighborhoods off Euclid Avenue, Holt Boulevard, and the streets north of the 10. We work in Ontario every week, so we know what’s behind those walls before the first hammer swings. If you’re planning a kitchen remodel, bathroom overhaul, room addition, or ADU, call Moreno Valley Builders at (877) 752-3154. We’ll walk the property, open the right walls, and give you a line-item quote that holds up once demo begins.
Why Moreno Valley Builders Is Ontario’s Preferred General Contractor Company
Ontario homeowners call us because we don’t quote a remodel off what’s visible. We inspect the framing, the electrical panel, the water supply lines, and the waterproofing before we put a number in front of you. That matters here. A 1962 ranch in the 91762 grid doesn’t have the same bones as a 2005 infill build near the 91758 logistics corridor, and a contractor who treats them the same is guessing.
Our reputation in Ontario comes from jobs where the inspection caught what the estimate couldn’t. We’ve fixed subfloors rotted by slow leaks under kitchen cabinets off Mountain Avenue, replaced galvanized supply lines that were down to a pencil-width of flow in a bathroom near Chaffey High, and rewired range circuits that still had cloth-wrapped conductors feeding them. When an Ontario homeowner asks for references, we hand over addresses within 15 minutes of their own street.
Our General Contractor in Ontario team runs a single point of accountability. One company manages the plumbing rough-in, the cabinetry order, the countertop template, the electrical permit, and the drywall patch. You don’t chase three subs at 7 a.m. We manage the trades so you don’t have to.
Styles & brands we work with
Remodeling Contractor in Ontario
Remodeling Contractor work in Ontario typically means opening up a post-WWII home that hasn’t seen a permitted renovation in 40 years. A kitchen remodel in a 1959 stucco ranch off the 91762 grid usually lands between $14,000 and $45,000 here, while a bathroom remodel runs $9,000 to $28,000 depending on how much plumbing relocates and what the inspector flags once the drywall comes down.
Material Selection Without the Builder-Grade Default
We specify KraftMaid and Wellborn cabinetry because their box construction survives Ontario’s dry heat without delaminating, and Cambria or Caesarstone countertops because quartz handles the daily sun that pours through old single-pane windows facing south, and we can also arrange Silestone repair in Ontario for existing quartz surfaces. Your project, your material choices. We bring samples to your kitchen table, not to a showroom across town.
Dust, Heat, and Santa Ana Wind Coordination
Remodeling in Ontario between September and November means scheduling work around Santa Ana wind events that push dust through every open wall cavity. We seal off the work zone, tarp the openings, and stage materials so grit doesn’t end up inside your new cabinetry or behind your new tile backer. It’s a small discipline that prevents a spring callback.
Licensed General Contractor in Ontario
Licensed General Contractor work in Ontario covers everything from pulling the permit to signing off the final inspection. A home addition in Ontario runs $45,000 to $130,000 depending on foundation work, roof tie-in complexity, and what soil compaction the city requires for your lot. We’re state-licensed, insured, and bonded, and we manage the full project lifecycle from permits to punch list.
Permits, Inspections, and Ontario’s Code Path
Ontario’s building department reviews every rough-in, every shear wall, every roof connection. When we open a 1960 tract home, the inspector almost always wants to see the existing electrical and plumbing brought to current code if the wall cavity is exposed. We plan for that from day one, write allowances into the contract, and price any surprise approval in writing before we touch it.
Prefab and ADU Coordination
We’re positioned for Ontario’s ADU market because we work with prefab brands like Abodu, Dvele, and Plant Prefab. An ADU in Ontario runs $90,000 to $220,000 depending on site work, utility runs, and whether you go panelized or traditional stick-frame. We coordinate the foundation, the module delivery, the utility connections, and the final inspection under one contract.
Trusted Brands We Service in Ontario
We stock and install the product lines Ontario homeowners actually ask for. For exterior and hardscape work, we specify Belgard pavers because they hold up to Inland Empire sun and wind-driven grit without surface chalking, Unilock for patio and retaining wall options with tighter joint profiles, and ActiveYards fencing for neighborhoods where wood fences get sandblasted by Santa Ana dust. We keep common replacement components and samples available for Ontario customers, which shortens material lead times from weeks to days on many kitchens, baths, and exterior upgrades.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Ontario Homes
- 1950s – 60s electrical that can’t carry a modern kitchen. Cloth-wrapped wiring, undersized circuits, and panels with no room for new breakers show up in almost every original Ontario tract home we open. The remodel scope has to account for a panel upgrade or a subpanel from the start.
- Galvanized and early copper plumbing at end of life. We see supply lines near Mountain Avenue and Euclid that have been running since Eisenhower was in office, with mineral buildup cutting flow to a trickle. The permit inspector inspects what’s exposed, so the rough-in gets replaced, not patched.
- Failed shower pan waterproofing and rotted subfloors. Ontario’s dry climate hides slow leaks. By the time a homeowner notices, the subfloor is gone. We open the floor, write the repair into a signed change order, and rebuild on record.
- Santa Ana wind-driven dust infiltration. Older attic penetrations, can lights, and HVAC registers pull wind-blown grit all fall. Exterior paint on west and north-facing walls chalks faster too, which is why we spec higher-grade exterior finishes and seal attic penetrations during remodels.
Pricing for General Contractor in Ontario, CA
Ontario pricing tracks the age of the home and what’s behind the walls more than any other factor. A small kitchen remodel with stock cabinetry may run $14,000, while a full kitchen with a panel upgrade, structural work, and custom cabinets lands closer to $45,000. Bathrooms run $9,000 to $28,000, window replacement $4,500 to $15,000 depending on how many openings and whether you’re moving to impact-rated systems like PGT or CGI. Below are market-calibrated ranges for the work Ontario homeowners request most.
| Project Type | Typical Ontario Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Window Replacement | $4,500 – $15,000 |
| Home Addition | $45,000 – $130,000 |
What moves the number? Wiring age, plumbing condition, subfloor rot, whether the city requires shear-wall upgrades on an addition, and how much structural work the existing framing needs. We write allowances for those items into the contract line-by-line, so you don’t see a surprise change order with no context. Call (877) 752-3154 for a free estimate and an inspection-first quote.
We Also Serve Cities Near Ontario
Beyond our Ontario work, we run projects in Montclair, Upland, Chino, and San Antonio Heights. If you’re in one of those cities and planning a remodel, addition, or ADU, the same inspection-first estimating and single-accountability project management applies. We schedule estimates across the Inland Empire weekly.
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
Because the original electrical, plumbing, and framing behind those stucco walls were installed decades before today’s code and load demands, and the permit inspector in Ontario requires exposed rough-in to be brought to current standards. A quote that only prices visible finishes will climb once the inspector sees what’s behind the drywall. We handle it differently: we open the walls during estimating, not after you’ve signed a number, so the quote reflects what’s actually there. Call (877) 752-3154 for an inspection-first estimate.
Yes, any remodel in Ontario that touches electrical, plumbing, structural framing, or load-bearing walls requires a city permit, and skipping one forfeits the third-party inspection sign-off on rough-in work that’s about to be buried behind drywall. Skipping the permit also creates a disclosure problem when you sell. We pull the permits, schedule the inspections, and close the job on record. One contractor. Every phase.
We write it into a signed change order with a line-item price and schedule impact before we touch it. Surprises get priced and approved in writing on the spot, never at the end as a lump sum. We opened a kitchen wall in a 1959 stucco ranch off the 91762 grid and found cloth-wrapped wiring feeding the range circuit and a subfloor patched with plywood scraps over a slow leak. Before anything went back in, we wrote the electrical rough-in and subfloor repair into a signed change order, pulled the permits, and scheduled the inspection sign-off so the walls closed on record, not on a handshake.
An allowance is a pre-approved budget line for a known variable, like replacing galvanized plumbing if the inspector flags it; a change order is a written amendment for something outside the original scope, priced and approved before work proceeds. Our Ontario contracts carry both, so the inevitable 1950s-era discoveries don’t turn into a billing argument. Call (877) 752-3154 if you want to see a sample contract structure before you sign anything.
Yes, we run additions and ADUs in Ontario from property survey and foundation through framing, rough-in, finishes, and final inspection under a single contract with a draw schedule tied to inspection milestones. We coordinate the trades, the material deliveries, the city inspections, and the lender draws so you don’t sit on a phone with three subs and a loan officer. From permits to punch list, we manage the trades so you don’t have to.
If you’re planning a remodel, addition, or ADU in Ontario, start with an inspection-first estimate. Call Moreno Valley Builders at (877) 752-3154, and we’ll schedule a walkthrough at your property. We’ll open the walls that need opening, price what we find, and hand you a line-item quote you can take to the bank.
Written by Noel Trevino, Owner at Moreno Valley Builders, serving Ontario and the Inland Empire.