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 a team that can handle the whole job under one contract, manage every trade, and keep the project moving without you playing phone tag between subcontractors. That’s the work we do every day at General Contractor Pinecrest Contractors. Led by Gil Rourke, we serve homeowners across Ontario from the older ranch-style tracts east of Euclid Avenue to the newer developments north of the 10, and we know exactly what these houses look like when the drywall comes down. Call us at (855) 702-1622 to schedule a free estimate.
Ontario’s housing stock has real personality. Much of it was built between the 1950s and 1970s as single-story stucco on slab, and those homes carry cast-iron drain lines, galvanized supply pipes, and sewer laterals that are now failing en masse. That’s not a cautionary footnote. It’s the single biggest reason a remodel quote in Ontario moves once the walls are open. We plan for it, we price it honestly, and we handle whatever the inspection turns up.
Why Pinecrest Contractors Is Ontario’s Preferred General Contractor Company
We work across the whole home: kitchens, bathrooms, additions, roofing, siding, windows, doors, hardscape, and ADUs. That breadth matters in Ontario because so many projects here involve multiple systems at once. A room addition triggers a lateral inspection. A kitchen remodel exposes old plumbing. A paver driveway sits on clay that expands and contracts through the Inland Empire’s dry-wet cycle. One contractor, every system. That’s not a slogan, it’s how we keep pricing and scheduling honest.
Local reputation is built on what happens when the unexpected shows up. In Ontario, that’s usually a sewer lateral that needs full replacement before an addition or ADU can pass inspection, or cast-iron drain lines with heavy scale and galvanized supply pipes on their last legs. We stop work, document what we found, and issue a written change order with a clear price before touching anything. No vague hand-waving about scope. No verbal promises. Everything in writing.
Our response time to Ontario depends on crew scheduling, but we quote every project as if it’s the only one on the board. Gil Rourke personally reviews estimates for Ontario jobs, including the allowances we recommend for older homes. If you’re planning a kitchen remodel in 91762 or a bath overhaul in 91764, call us and we’ll set a site visit around your schedule.
Styles & brands we work with
General Contractor Services in Ontario
General Contractor Services in Ontario mean managing a remodel from first inspection to final city sign-off. For Pinecrest, that includes pulling permits, coordinating trades, ordering materials, scheduling inspections, and keeping the budget straight. A kitchen remodel in Ontario runs $14,000 to $45,000, a bathroom remodel $9,000 to $28,000, and a full home addition $45,000 to $130,000. The wide range reflects what we find inside: original wiring, failing rough-ins, and framing that no longer meets current code.
Kitchen Remodeling
Ontario kitchens in 1950s and 1960s tract homes almost always hide cast-iron drain lines and galvanized supply pipes. We open the walls carefully, then issue a written change order for any failing plumbing the permit inspection will flag anyway. Cabinetry, counters, and plumbing fixtures are spec’d from brands you choose, not brands we push.
Bathroom Remodeling
Converting a tub to a walk-in shower or replacing a failing bathroom floor usually triggers the same discoveries. We use Schluter waterproofing systems behind every shower and wet-area finish, and we handle the permitting, code compliance, and inspection scheduling so you never have to chase a city inspector.
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.
Construction Company in Ontario
Construction Company work in Ontario goes beyond cosmetic remodels. We handle additions, ADUs, garage conversions, and whole-home renovations that require structural changes, foundation work, and coordination across multiple trades. A home addition in Ontario runs $45,000 to $130,000, an ADU $90,000 to $220,000, and a garage conversion $300,000 to $80,000 depending on existing conditions.
Room Additions
Any addition in central Ontario neighborhoods near Euclid Avenue or Holt Boulevard will trigger a sewer lateral inspection. If the lateral is original cast iron and failing, it must be replaced before the city signs off. We inspect the lateral before we bid, so that cost is not a surprise three months into the project.
ADU Construction
Ontario’s pushed hard on ADUs as infill housing, and older lots often have clay soil and undersized existing laterals. We plan the foundation, flatwork, and utility tie-ins around the city’s inspection requirements, and we schedule concrete pours at dawn during summer because by mid-morning the mix is setting faster than it can be finished.
Trusted Brands We Service in Ontario
We carry and service products from Toto and American Standard for plumbing fixtures, Schluter for tile and waterproofing systems, and Sterling for value-conscious bath lines. Having access to these brands means we can show you the trade-offs honestly across price tiers and back the installation with the manufacturer’s spec. For Ontario customers, we stage materials locally and coordinate delivery windows so your job doesn’t sit idle waiting on a tub or a valve trim.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Ontario Homes
- Failing cast-iron drain lines and galvanized supply pipes hidden inside walls. Homes east of Euclid Avenue built in the 1950s and 1960s are full of these, and once we open a wall for a kitchen or bath remodel the permit inspection will require replacement.
- Original sewer laterals that must be replaced before a room addition or ADU can pass inspection. In central Ontario (91761 and 91762), we see this on most projects. We inspect the lateral before bidding so it’s priced into the contract, not sprung later.
- Clay-heavy soils that expand and contract with seasonal moisture. This movement cracks stucco, shifts flatwork, and stresses foundation connections. We address drainage and slab conditioning before we build on top of it.
- Santa Ana wind damage to roofing and exterior finishes. Ontario sits in the path of these wind events, and older roofs lose fasteners and underlayment integrity fast. We check roof condition on every whole-home project.
Pricing for General Contractor in Ontario, CA
Here’s what to budget in the current Ontario market:
| Project | Typical Range in Ontario |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
What moves the price? Age of the home, condition of the rough-in plumbing, whether the sewer lateral needs replacement, and code upgrades triggered by the permit. We write allowances into every contract so uncovered conditions are priced and approved in writing before we proceed. Call (855) 702-1622 for a free estimate with line-item detail, not a verbal range.
We Also Serve Cities Near Ontario
Our team works throughout the western Inland Empire, serving General Contractor in Ontario and surrounding communities including Montclair, Upland, Chino, and Rancho Cucamonga. If you’re in one of those cities and planning a remodel, we’ll bring the same brand access and inspection-first process to your door.
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
Expect the city to require a sewer lateral inspection before the addition passes final inspection. If the lateral is original cast iron, it’ll likely need replacement at $5,000 to $14,000 depending on depth and length to the main. We inspect the lateral before we bid so that cost is in the contract, not a change order. Call (855) 702-1622 for an inspection-first quote.
We stop work, photograph the condition, and issue a written change order with a fixed price before we touch anything. On a 1962 stucco tract home near Holt Boulevard and Euclid Avenue in Ontario, our crew opened a kitchen wall for a remodel and found cast-iron drain lines with heavy scale and galvanized supply pipes on their last legs. We documented the failing rough-in, wrote a change order for full repipe and lateral replacement, and scheduled the concrete pour at dawn to beat the 100°F heat.
Because Inland Empire heat routinely exceeds 100°F from June to September, and concrete sets fast in those conditions. A mid-afternoon pour can set before it’s finished, causing shrinkage cracks. We pour at dawn, when temps are lower, and we keep the mix under control so driveways and slabs in Ontario cure properly.
Kitchen and bath remodels typically require building, plumbing, electrical, and mechanical permits from the City of Ontario, plus a sewer lateral inspection if any underground work is involved. Pinecrest pulls every permit, schedules all inspections, and manages the corrections. You’ll never have to chase the city.
An allowance is a fixed dollar amount we set aside in the contract for known unknowns: latent plumbing, structural repair, code upgrades. When we open a wall and find failing cast iron, the allowance covers the repair without changing the contract price. In older Ontario homes, allowances are not optional, they’re the difference between a quote that holds and one that falls apart.
Text or call (855) 702-1622 and ask for Gil Rourke. We’ll schedule a site visit, inspect the rough-in, check the lateral, and give you a written estimate with allowances for the things we know these Ontario houses hide.
Written by Gil Rourke, Owner at Pinecrest Contractors, serving Ontario and surrounding cities.