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
When you need a General Contractor in Ontario, you want someone who understands what your house is actually built on and what the city will ask for before walls come down. We work in Ontario weekly, from the 1950s tract homes near historic downtown to the new lots going in at Ontario Ranch. Our crews know Holt Boulevard, Euclid Avenue, and the tight side streets off Vineyard where parking a material truck takes planning, not luck. Call (866) 505-5254 and you’ll talk to someone who has pulled permits in this city, not a call center.
Why Daly City Construction Is Ontario’s Preferred General Contractor Company
Ontario homeowners hire us because we show up knowing what the building department will flag. That matters here more than in neighboring cities. A remodel on a 1950s home near the Ontario Convention Center often means a sewer lateral video inspection before the first wall is opened. A project in a newer Ontario Ranch build has a totally different permit path. We’ve done both.
Our Ontario customers tell us the same thing: the job stayed clean, the neighbors weren’t angry, and the scope didn’t drift. On a tight lot near Chaffey High School, staging one 20-yard debris bin meant coordinating with the city on temporary parking permits. We handled that before demo day. That’s the difference between a contractor who visits Ontario and one who works here regularly.
Noel Cabrera runs every Ontario project the same way he runs jobs back home in Daly City: written scope, line-item allowances, and a draw schedule you can read. Not a handshake and a hope.
Styles & brands we work with
Construction Company in Ontario
As a Construction Company in Ontario, we handle the full scope of residential work: foundation-to-roof renovations, room additions, garage conversions, and ground-up ADUs. A typical whole-home remodel in Ontario runs $140,000 to $450,000 depending on square footage and finish level. Room additions land between $45,000 and $130,000. These numbers reflect Ontario’s current permit fees, material delivery costs, and the labor market for licensed crews in the Inland Empire.
Room Additions and Garage Conversions
Ontario’s mid-century homes were built small, and a lot of homeowners along the 91762 and 91764 corridors need square footage more than style. A garage conversion here costs $30,000 to $80,000, but the real cost driver is what’s under the slab. Older Ontario garages often sit on unreinforced concrete with no vapor barrier. We plan for that.
Ground-Up ADU Construction
An ADU in Ontario runs $90,000 to $220,000. Our General Contractor team manages the full build, and for prefab we work directly with Abodu and Plant Prefab. Prefab can shave months off a traditional site build, which matters when you’re paying a mortgage on a house that isn’t generating rental income yet.
Remodeling Contractor in Ontario
As a Remodeling Contractor in Ontario, we spend most of our time in kitchens and bathrooms, and these projects come with city-specific surprises. A kitchen remodel in Ontario runs $14,000 to $45,000. A bathroom remodel runs $9,000 to $28,000. Those ranges cover everything from cabinet pulls to permit fees, but they don’t cover what’s hiding in the walls of a 1960s tract home.
Kitchen and Bath Remodels
We specify Kohler or Grohe fixtures alongside value-tier American Standard when budget matters. Countertops get Cambria or Caesarstone, and we’re as comfortable doing a $9,000 small-kitchen refresh near Ontario High School as we are a $45,000 full gut with load-bearing wall removal. The difference is in the scope sheet we write, not the handshake we offer.
Whole Home Remodels
A whole-home remodel here means coordinating plumbing, electrical, HVAC, and structural in a house that’s been patched for 60 years. We sequence the work so you’re never living in more than one torn-apart room at a time. That’s the practical reality of remodeling in Ontario’s older housing stock.
Trusted Brands We Service in Ontario
We’re authorized to install and service products from 50+ manufacturers, and that matters in Ontario because we can order local-stock materials same-week instead of waiting on a distribution center in Riverside or San Bernardino. For concrete and masonry work we run Quikrete and Sakrete lines. For prefab ADUs we work with Abodu. Cover is our go-to for exterior sealants on Ontario’s stucco-heavy exteriors. One team, the full material ecosystem, no showroom runaround at three different suppliers off Milliken Avenue.
Common General Contractor Problems We See in Ontario Homes
- Clay sewer laterals on pre-1980 homes. The older neighborhoods off Holt Boulevard and around the historic downtown were built with clay pipe that root intrusion and shifting soil destroy. Any permitted remodel triggers a lateral inspection, and replacement can add $4,000 to $8,000 to the job. We always scope for video inspection up front.
- Galvanized plumbing in 1950s and 1960s tract homes. These supply lines corrode from the inside until water pressure drops to a trickle. You won’t know until we cut open a wall. We plan for full repipe when the house age says we should.
- Tight lots and zero-lot-line setbacks. Ontario’s older subdivisions packed houses close together. Staging materials on a 5-foot side yard means coordinating dumpster drops, porta-potty placement, and material delivery in a specific order. Homeowners who try to wing this end up with parking tickets and angry neighbors.
- Santa Ana wind and 100-degree heat during exterior work. Ontario’s hot inland summers accelerate mortar and stucco cure times, and high-wind days make roofing and siding work dangerous. We schedule exterior phases around the forecast and adjust mix ratios so finishes don’t crack a month later.
See the difference
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AfterPricing for General Contractor in Ontario, CA
Ontario pricing tracks slightly below Los Angeles County but above the cheaper Inland Empire towns. You’re paying for licensed crews who carry workers’ comp, pull permits, and schedule inspections. Here’s what we see in Ontario right now:
| Project | Typical Ontario Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
| Garage Conversion | $30,000 – $80,000 |
The biggest variable in Ontario is underground work. A home near Euclid Avenue with a failing clay lateral will cost more than an identical remodel in a 2005 subdivision near Ontario Ranch. We give you a written line-item quote before we start, and we don’t change the number unless you change the scope. Call (866) 505-5254 and we’ll walk your specific street and lot before pricing anything.
We Also Serve Cities Near Ontario
Our General Contractor in Ontario service area reaches Montclair, Upland, Chino, and San Antonio Heights. Same crews, same written scope sheets, same permit knowledge. If you’re just outside Ontario but facing the same aging housing stock, call us and we’ll schedule a site walk.
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
We coordinate temporary parking permits with the city before demo day, schedule material deliveries in a specific drop order, and stage tools in the garage or side yard when possible. On a recent remodel near Holt Boulevard, we fit a 20-yard debris bin in the driveway and kept the street clear for neighbors. Call (866) 505-5254 and we’ll walk your lot before we ever quote a staging plan.
The city requires a sewer lateral inspection on most remodels of pre-1980 homes, and many older Ontario houses have clay pipe with root intrusion or full collapses. If the inspection fails, lateral replacement is mandatory before rough-in can pass. We include video inspection in our initial scope so it’s never a surprise change order.
Limited access adds labor and logistics cost. If we can’t get a dumpster or material truck close to the house, we account for hand-carrying materials and coordinating smaller, more frequent deliveries. We price this honestly in the line items, not as a vague “site conditions” fee. Call (866) 505-5254 and we’ll tell you exactly what your street will allow.
Yes. Every Ontario project gets a written scope of work with line-item allowances for finishes, fixtures, and any underground work we can’t fully see until demo. Change orders are written, signed, and priced before work proceeds. Our goal is that you never sign something you didn’t read first.
We follow Ontario’s posted construction hours and coordinate noisy phases like demo and concrete cutting for mid-morning when neighbors are less likely to be home. On tight-lot projects we also post notice to adjacent neighbors before loud phases. It keeps the job moving and keeps the city off our permit record.
Working on a Tight Ontario Lot: What It Actually Takes
Ontario’s oldest neighborhoods are not built for modern construction logistics. A 1950s tract home on a 6,000-square-foot lot near the Ontario Convention Center or off Holt Boulevard often has a side yard barely wide enough for a wheelbarrow. Neighbors share property lines tight enough that a ladder leaning the wrong way crosses onto someone else’s wall. That’s not a problem you solve on day one. It’s a problem you solve before you ever sign a contract.
On a kitchen remodel near Holt Boulevard, our crew found the original galvanized supply lines had corroded shut. We pulled permits, ran a sewer lateral video inspection, and discovered root intrusion in the clay pipe. The lateral got replaced before rough-in. The project stayed on schedule because our scope of work and draw schedule already accounted for underground work. That’s what working in Ontario means: planning for what’s under the dirt, not just what’s inside the walls.
Party-wall notice requirements on zero-lot-line properties are another thing most contractors skip until it’s a problem. Ontario requires written notice to adjacent owners before certain structural work. We file it early. We talk to your neighbors before the first saw fires up. A project that starts with an angry neighbor starts with a stop-work order waiting to happen.
Historic and overlay-district reviews are real in the older pockets around downtown Ontario. Design review deadlines get missed, inspection sign-offs stall, and homeowners pay for rework. We check the address against the city’s overlay maps before we scope anything. When you call (866) 505-5254, the first 10 minutes of the conversation are about your street, your lot, and your permit path. Not a brochure pitch.
Written by Noel Cabrera, Owner at Daly City Construction, serving Ontario since our first Inland Empire project and applying the same written-scope discipline to every lot in 91762, 91764, 91798, and 91758.