Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterConstruction Services in Ontario, CA
Most calls we get from Ontario start the same way: a homeowner opened up a wall and found something the last contractor left behind, or the house has shifted enough that doors don’t close right anymore. Whether you’re off Euclid Avenue in a 1940s ranch or out in Ontario Ranch watching hairline cracks snake across new drywall, you need someone who knows which problems are normal for this city and which ones need a permit pulled before they get worse. We answer the phone, we show up when we say we will, and everything goes in writing. Call (877) 610-1318 and you’ll talk to a real person, not a call tree.
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.
Why Ontario Homeowners Choose Barrett & Sons Construction
Barrett & Sons Construction is owner-operated and has been since day one in 1998. Tom Barrett’s name, address, and license number are published for anyone to look up before signing anything. His sons run the crews. That’s the whole point: the person who shakes your hand is the person accountable if something isn’t right.
We serve homeowners across Ontario, including the tree-lined streets of the Historic Euclid district and the new builds south of the 60 in Ontario Ranch. Homeowners in those areas deal with very different houses – original plaster and pier-and-post foundations up north, expansive clay and cut-and-fill pads down south – but they all get the same thing from us: a written scope, written allowances, and a written change order before any price moves. No surprises at the final walkthrough.
Our reputation in the Inland Empire is built on showing up. Permits get pulled on every eligible job, inspections get signed, and every project carries the 90-Day Done Right Promise in writing. If it’s not right, Tom comes back and makes it right. One call.
Construction Services We Offer in Ontario
Kitchen Remodeling
Ontario’s older homes in ZIPs 91762 and 91764 often have kitchens that haven’t seen a structural update since before the 91 freeway was widened. We plan Kitchen Remodeling - Ontario around California Building Code requirements for those vintage layouts, and we install brands you can look up, like KraftMaid cabinetry and Cambria quartz.
Learn more about our Kitchen Remodeling in Ontario.
Bathroom Remodeling
Bathrooms in Ontario Ranch production homes tend to age quickly, especially around tub surrounds and shower pans on compacted fill. We handle Bathroom Remodeling in Ontario from full gut renovations to accessibility updates, with permits and inspections on every eligible job.
Learn more about our Bathroom Remodeling in Ontario.
Roofing
Santa Ana winds that rip through the Cajon Pass in the fall are hard on Ontario roofs, especially older composition shingle systems in the historic core. We install GAF and CertainTeed Ontario Roofing with wind nailing patterns that meet current code for high-wind zones, then we stand behind the work.
Learn more about our Roofing in Ontario.
Windows & Doors
Original single-pane windows in a 1930s bungalow off Euclid Avenue leak enough conditioned air to double a summer cooling bill when it hits 110°F. We replace them with Andersen or Marvin Windows & Doors - Ontario products sized to the existing framing, which matters when you’re working with vintage rough openings.
Contact us about window and door replacement in Ontario.
Fence Installation
Wind loads from the Santa Anas and soil movement on expansive clay both take a toll on fence posts in this area. We set posts below grade with concrete rated for local conditions, and we pick up the permit when the project crosses the height or boundary thresholds Ontario requires.
Contact us about fence installation in Ontario.
Driveway & Pavers
Ontario’s July heat can spike past 110°F, which means concrete pours need pre-dawn scheduling and proper curing methods or the slab will crack within a season. We install Belgard and Techo-Bloc paver systems and poured concrete flatwork with the timing and moisture control this climate demands.
Contact us about driveway and paver work in Ontario.
Home Additions & ADU
Ontario Ranch’s rapid buildout and the city’s push for accessory dwelling units have created steady demand for additions that won’t exacerbate differential settlement on cut-and-fill lots. We handle ADU projects from initial site evaluation through final inspection, with every scope change documented in writing before work proceeds.
Contact us about home additions and ADUs in Ontario.
Neighborhoods We Serve in Ontario
Our crews work across Ontario every week, including these areas:
- Historic Euclid District (91762)
- Ontario Ranch (91761)
- Downtown Ontario (91764)
- Archibald Ranch area (91761)
- North Ontario near the 10 (91758)
Typical response time inside Ontario is same-week for estimates. Repairs that can’t wait get priority scheduling.
Why Ontario’s Climate & Housing Affect Construction
Ontario hits 108°F to 112°F in July and August with enough regularity that Cal/OSHA’s outdoor heat standard shapes how we schedule every pour. Concrete placed after 10 a.m. in July cures too fast, so we run pre-dawn pours and keep moisture blankets on the slab. It’s slower and more expensive than what you’d get in a coastal city, but it’s the only way to avoid rapid curing failures and heat-illness liability on an active site.
The other wildcard is wind. The Cajon Pass funnels Santa Ana events through Ontario in the fall, and those gusts knock over unbraced framing, tear loose roof underlayment, and turn job-site debris into projectiles. Any contractor who has framed through a full Ontario wind season braces differently. We learned that the practical way, on actual sites here, not from a manual.
And then there’s the housing stock itself. Ontario’s older core in ZIPs 91762 and 91764 – think craftsman bungalows from the 1920s through 1950s – sits on foundations that have been settling for the better part of a century, with plaster walls that complicate any remodel under current California Building Code. South of the 60 in Ontario Ranch, the pads were cut-and-filled aggressively when that former vineyard and dairy land got converted to residential. Local crews routinely see differential settlement within a few years of original construction. That drives a steady stream of foundation repair and flatwork replacement jobs here that you simply wouldn’t see in a more established neighborhood. Knowing which one you’re dealing with before you open a wall is the difference between a clean job and a change order nobody saw coming.
Pricing for Construction in Ontario
Straight numbers for Ontario work:
- Kitchen remodel: $22,000-$55,000 depending on footprint and whether you’re moving plumbing
- Bathroom remodel: $9,000-$28,000 depending on scope and whether we’re addressing water damage
- Roof replacement: $8,500-$18,000 depending on square footage and pitch
- Windows & doors: $650-$1,400 per opening installed, product dependent
- Fence install: $22-$45 per linear foot including posts and concrete
- Driveway & pavers: $9-$22 per square foot for paver systems; $6-$12 per square foot for poured concrete
- ADU conversion or addition: $85,000-$250,000 depending on utility runs and site grading
These are planning ranges, not quotes. Your exact number comes from a written estimate based on what we find when we walk the site. If a change is needed, you’ll see it on paper before it happens, never after. We offer a free second opinion on any written estimate, no trip charge inside the county, $40 off any repair over $200, and a permanent 10% senior and veteran discount. Estimates are free, and the quote you sign is the price you pay.
Service Area - Cities Near Ontario
We serve Ontario and the surrounding cities. Homeowners in Montclair, Upland, Chino, and Claremont call us for the same written-scope, permit-pulled work Ontario residents get. If you’re nearby, call (877) 610-1318 and ask for a free estimate.
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 Construction in Ontario
A home addition or ADU in Ontario typically runs $85,000 to $250,000, with the wide range driven by site conditions: Ontario Ranch’s cut-and-fill pads can require foundation upgrades, while older lots in 91762 and 91764 may need electrical service upgrades to support added square footage. Call (877) 610-1318 for an exact quote based on your lot and scope. Estimates are free.
Yes, we pull permits and get inspections signed on every eligible job in Ontario. The permit inspector works for you, not for the contractor, and that’s exactly why we like the process. If you’ve been told permits are optional before, that’s a red flag we hear about constantly from Ontario homeowners.
Not without a written change order that you sign first. That’s the rule on every Barrett & Sons job in Ontario. An allowance that isn’t on paper is a surprise waiting for a date, so every scope change, every allowance adjustment, and every material substitution gets documented in writing before work proceeds. Call (877) 610-1318 and we’ll walk you through how our change order process protects you.
Most kitchen remodels in Ontario run 4 to 8 weeks from demolition to final inspection, depending on whether you’re moving plumbing or dealing with plaster-wall surprises in a pre-1950s home. Ontario Ranch production homes tend to move faster because the framing is predictable. A full gut with structural work and custom cabinetry can push to 10 weeks. We’ll give you a schedule in writing before we start.
Yes, we handle foundation repair and flatwork replacement throughout Ontario Ranch and the rest of 91761. That area’s aggressive cut-and-fill grading on former vineyard and dairy land means many homes show differential settlement within a few years, which creates cracked driveways, uneven walkways, and door frames out of square. We assess the site first, then give you a written plan and a fixed price. Call (877) 610-1318 to schedule a free estimate.
If you’re planning construction in Ontario, start with a conversation. We’ll give you a straight answer about what’s feasible, what it’ll cost, and what the permit path looks like. Call (877) 610-1318 or reach out through our home page to schedule your free estimate. A live person answers, 24/7.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Ontario and the Inland Empire since 1998.
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
"Every change to the price came as a written change order before the work happened, not as a surprise on the final bill. I did not know contractors still did that."
- Xiomara Benavides"Tom Barrett was on our job most days himself, not just at the quote and then never again. When something needed deciding there was an actual person to decide it with."
- Rosalie Pemberton"Came back a year later to sort a door that had dropped as the frame settled. No charge and no argument about whether it was covered."
- Thaddeus Oyelowo