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 Montclair
If you’re weighing a kitchen overhaul, a full home remodel, or an addition on an older Montclair tract home, the single most important number to know is this: (855) 600-3192. That’s our line at Stallion Contractors, and Ruben Montoya picks it up with a straight answer and a free estimate. We work throughout the 91763 ZIP and know exactly what 1950s and 1960s slab-on-grade construction means when you start moving walls. Our General Contractor team manages everything from the first demolition cut to the final inspection.

We’re not promising speed. We’re promising order. On a Montclair rebuild, that matters more.
Why Stallion Contractors Is Montclair’s Preferred General Contractor Company
Montclair homeowners call us for a specific reason: most homes here were built fast in the 1950s and 60s, and they don’t respond to surprises well. When a wall comes open and the cloth-wrapped wiring crumbles, or the shallow slab footing won’t support what the roofline wants, a homeowner needs a contractor who has seen that exact failure before and priced it correctly the first time. We have.
Ruben Montoya runs every scope review personally. That’s not a sales line. It means one person walks your lot, looks at the original stucco, the grade, the setback, and the roof pitch before you get a number. Word travels in a city this size. The reason we keep getting called back to Montclair streets like Benito, Ramona, and Palo Verde is that the final invoice matches the written estimate, or the difference was approved in writing before a hammer moved.
Licensed and insured. One contract. Every trade. Your project managed start to finish.
Styles & brands we work with







General Contractor Services in Montclair
General Contractor Services in Montclair starts with the reality of what’s behind 60-year-old stucco. When a Montclair homeowner wants a kitchen opened into a dining room or a bathroom brought to modern code, the job isn’t cosmetic. It’s structural coordination. It’s electrical. It’s plumbing. It’s roofing if the reworked wall carries a ridge load. We handle every one of those trades under one contract, so nobody is pointing fingers when a drain line conflicts with a footing.
Most kitchen remodels in Montclair run $14,000 to $45,000, and baths land between $9,000 and $28,000. The spread depends almost entirely on what’s inside the walls, not what finish you pick for the front of them.
Full-Scope Remodeling and Rebuilt Footings
Because most original Montclair homes sit on shallow slabs with no attic space, any addition here forces a re-engineering of the footing and roofline. That’s a hidden cost that rarely surfaces in neighboring cities with newer housing stock. We include a pre-inspection allowance in every Montclair estimate, so the structural conversation happens before you sign, not after the concrete is open.

Written Change Orders, Not Verbal Surprises
We don’t surprise homeowners with verbal cost overruns. Every change to an approved scope is written, priced, and signed before work proceeds. If you approve it, we proceed. If you don’t, we don’t. That discipline is the difference between a remodel that stays on schedule and one that stalls mid-demo.

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 Montclair
Construction Company work in Montclair isn’t abstract. It’s 3,000-square-foot two-story rebuilds on 50-foot lots that used to hold 1,200-square-foot single-story homes. The Inland Empire’s scrape-and-rebuild pressure is stronger here than almost anywhere else in the 909. When you work as the contractor on those jobs, you learn which subs show up on time, which truss lead times are honest, and how to stage a full demolition on a lot barely wider than the house itself.
Home additions in Montclair run $45,000 to $130,000. That’s a big range because the cost driver is frequently not the new square footage. It’s what it takes to carry the new square footage: deeper footings, roof reframing, panel swaps, and sometimes a service lateral upgrade.
Scrape-and-Rebuild Coordination
If you’re rolling a 1958 tract home, the project is really demolition, structural design, and new build, in that order. Montclair’s original subdivisions have narrow lots and mature trees, which makes access a daily negotiation. Our staging plan is part of the contract, not an afterthought. We know which city inspectors require what, and we line up rough inspections so demo doesn’t sit open a week longer than it has to.

ADU and Prefab Structures on Existing Lots
For homeowners who don’t want to tear down but do want rental or in-law square footage, we build ADUs through our partnerships with Abodu, Dvele, and Mighty Buildings. Those systems change the foundation conversation on a Montclair slab. We’ll tell you straight whether a prefab panel system or a stick-built addition makes more sense for your lot width and soil.
Trusted Brands We Service in Montclair
We install and service what we know will hold up in the Inland Valley. That means Cambria, Silestone, and Caesarstone on countertops, because they handle a decade of hard water and sunlight without etching the way cheap quartz does. It means GAF, CertainTeed, and Owens Corning on roofs, because a Montclair summer climbs past 100 degrees and the underlayment matters as much as the shingle. It means James Hardie siding and Schluter tile-edge systems where the manufacturer’s warranty is only as good as the installer’s work. We stock the trim, flashings, and fasteners for these lines, so a Montclair repair doesn’t wait on a distributor in Rancho Cucamonga.
See the difference
Before
After
Before
After
Before
AfterCommon General Contractor Problems We See in Montclair Homes
- Cloth-insulated wiring. Original 1950s and 60s electrical in Montclair is often past its safe life. When a wall opens, the insurance-required upgrade to AFCI breakers and grounded receptacles adds real cost, and a real contractor writes that into the change order before touching it.
- Shallow slab footings. Many original Montclair homes were poured as four-inch slabs with no perimeter footing to speak of. Any addition that shifts load changes the engineering, and skipping that inspection is how a $20,000 addition becomes a $60,000 correction.
- Narrow 50-foot lots. Montclair’s older subdivisions pack side yards under five feet. Staging materials, a dumpster, and a crew on a lot that narrow means the schedule has to be written around access, or the punch list never ends.
- Original stucco with failing waterproofing. The UV here is brutal. Once stucco cracks and the paper behind it degrades, you’re looking at water intrusion, dry rot, and mold, all of which a remodel will uncover and none of which should be covered over.
Pricing for General Contractor in Montclair, CA
Montclair pricing is set by what’s behind the walls, not the ZIP code itself. A straight kitchen remodel starts around $14,000 and a full custom kitchen can reach $45,000. Bathrooms run $9,000 to $28,000. A home addition in the 91763 is $45,000 to $130,000, with the caveat that shallow-slab footing work pushes that number higher faster than anything else. We give free estimates with written line items, and every allowance is spelled out before you sign.
| Project | Montclair Price Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
Call (855) 600-3192 to schedule a free estimate. Ruben Montoya will walk the property and give you a real number, not a placeholder.
We Also Serve Cities Near Montclair
Montclair sits close to Claremont, Ontario, Upland, and La Verne, and a lot of our 91763 work comes from homeowners who cross the San Bernardino County line when they find us. If your property is in one of those neighboring cities, you still get the same Montclair level of service: one contractor, written scopes, and straight answers on what a permit will actually trigger.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair 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 Montclair
Because homes here were built in the 1950s and 60s with materials and methods that don’t meet current California code, so once a wall is open, the inspector can require upgrades to wiring, framing, or insulation that were not visible before demolition. We write an inspection allowance into every Montclair estimate and price any required change in writing before work continues. Call (855) 600-3192 and we’ll explain what’s likely behind your specific walls.
We plan the delivery schedule and dumpster placement before demolition starts, because on Montclair’s original post-war lots, there is no default place to put a materials pile. That plan is part of the contract. It’s how we keep a scrape-and-rebuild or addition on lots off Holt Boulevard moving without blocking the street or the neighbor’s driveway.
Often yes, and the most common trigger is electrical: once a wall is open, the current code requires upgrading existing circuits to meet safety standards, which older Montclair homes rarely pass. We don’t treat that as a surprise because we expect it and tell you before you sign. Call (855) 600-3192 for an estimate that includes those likely permit-triggered costs.
The shallow slab foundation. Original Montclair homes were frequently poured without deep footing support, so any addition that adds roof load forces a re-engineering of the footing and roofline, which is a structural cost, not a finish cost. We get a pre-inspection before you sign, so that number doesn’t arrive mid-project. Call (855) 600-3192 for a free estimate that accounts for it.
We sequence roof, stucco, and concrete pours around heat and wind windows, because August afternoons and Santa Ana gusts will ruin a roof underlayment or a fresh stucco cure. That’s written into the schedule. On exterior work, we specify UV-rated and drought-tolerant materials that hold up in the Inland Valley rather than fighting it.
Written by Ruben Montoya, Owner at Stallion Contractors, serving Montclair with licensed and insured general contracting.
If you’re planning a remodel, addition, or rebuild in Montclair, call (855) 600-3192 for a free estimate. One contractor. Every trade. Built to the standard your home deserves.