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 Home Remodeling Across Montclair
If you’re planning a home remodel in Montclair, you’re almost certainly working on a 1950s – 1970s stucco tract home with no vacant land around it to build new. That means opening walls, dealing with what’s behind them, and navigating the city’s plan-check process on a narrow infill lot. We know Montclair’s housing stock down to the zip code, 91763, and we’ve worked on enough mid-century single-story homes here to know what you’ll find once the drywall comes down. Toolbox Contractors handles full home remodels, kitchen and bath overhauls, room additions, and garage-to-ADU conversions across Montclair with one contract and one point of accountability. Call (855) 382-3257 for a free estimate on your project.
Why Toolbox Contractors Is Montclair’s Preferred Home Remodeling Company
Montclair sits fully built out between Pomona, Claremont, and Chino. There are no open parcels left. Every project we take on here is a remodel, an addition, or a conversion on an existing lot, and most of those lots are narrow with zero-lot-line setbacks or shared property walls. That’s not a problem for a general contractor who has done this repeatedly in 91763, but it does require planning around plan review triggers that a contractor from outside the San Gabriel Valley might not anticipate until the permit desk flags it.
Norm Castellano, our owner, built Toolbox Contractors to be the single point of accountability for exactly these projects. When a Montclair homeowner hires us, they’re getting one licensed general contractor for the framing, the plumbing rough-in, the cabinets, the countertops, and the roof if the scope calls for it. We work with 50+ vetted material brands so you’re not stuck with a generic catalog when you select finishes. And we price surprises in writing before work continues, which matters more in Montclair than almost anywhere else because of what hides inside these older walls.
Styles & brands we work with
Full Home Remodel in Montclair
A full home remodel in Montclair typically runs $45,000 – $130,000 depending on scope, square footage, and what the walls reveal once we open them. These projects usually involve reconfiguring interior spaces on a 1950s – 1970s single-story tract home, upgrading the plumbing and electrical that code requires once those systems are exposed, and often reworking a low-pitch or flat roof that’s served its time. Because Montclair homes sit on small lots, a full remodel here frequently includes a room addition or a second-story build rather than expanding the foundation footprint out into a yard that doesn’t exist.
Inspection Before Finish Selection
We don’t price a Montclair full home remodel off the finish list first. We inspect the walls, the slab, the roof framing, and the service panel before we write the contract. That’s how we catch the original galvanized supply lines and undersized headers that would otherwise become change orders later.
Written Allowances for Hidden Work
Every full remodel contract we write for a Montclair home includes written allowances for the work code will require once walls are open. When we find something, you see the line-item price, you approve it in writing, and then we proceed. The draw schedule doesn’t slip because we planned for it.
Home Remodeling Contractor in Montclair
A home remodeling contractor in Montclair has to be comfortable with stucco, slab foundations, and the peculiarities of tract homes built between the Eisenhower and Carter administrations. Kitchen remodels here run $14,000 – $45,000, bathroom remodels $9,000 – $28,000, and a garage conversion $30,000 – $80,000 depending on condition and finish level. The contractor you choose should be able to pull permits, coordinate the trades, and keep the project moving through Montclair’s plan-check process without treating your living room like a showroom.
One Contract, Every Trade
We’re a full-scope general contractor, not a kitchen specialist or a bathroom-only operator. The same team that opens your walls and reframes the wet wall can replace the roof, install new windows, and run the fence line. That eliminates the three-phone-call shuffle between four different subs in Montclair.
Permits and Plan Review
Montclair’s plan-check process moves at its own pace, and we handle that for you. We pull the permits, we sit the inspections, and we don’t paper over a code issue to keep the schedule moving. When an inspector requires a fix, you’ll know what it costs before we touch it.
Trusted Brands We Service in Montclair
Because we’re the general contractor on the job, we’re also the one accountable for every material that goes into your Montclair remodel. That’s why we work with a curated portfolio of 50+ nationally recognized brands across cabinets, countertops, roofing, windows, fixtures, and fencing. On a recent Montclair full remodel near the Pomona edge of 91763, we combined KraftMaid cabinetry with Cambria countertops and Jerith fencing once the interior scope wrapped. We also install Master Halco and Ameristar fence systems for homes that need a property line clean-up as part of a larger exterior scope. You won’t have to chase a separate fence contractor; it’s in the same contract.
See the difference
Before
After
Before
After
Before
AfterCommon Home Remodeling Problems We See in Montclair Homes
- Original galvanized plumbing behind the stucco. Montclair tract homes from the 1950s and 1960s often still have galvanized supply lines. Once a wall is open, the permit inspection forces a copper or PEX rough-in upgrade that was never in the original quote if the contractor didn’t plan for it.
- Undersized or notched framing members. We regularly find load-bearing headers that a previous remodel cut into for plumbing or venting. It’s a code failure the moment the inspector sees it, and it has to be corrected before drywall goes back up.
- Low-pitch and flat roof failures after winter rain. Montclair’s inland San Gabriel Valley climate means hot dry summers followed by winter rain that finds every seam in an aging low-slope roof. When a remodel opens the walls and reveals water intrusion, the roof scope gets sequenced into the job on the spot.
- Zero-lot-line and shared-wall plan review. On Montclair’s narrow lots, many homes share a property wall or sit right on the setback line. That triggers extra plan review and sometimes a structural engineer’s letter. We scope that up front so the contract reflects reality, not a surprise after the permit is submitted.
Pricing for Home Remodeling in Montclair, CA
Here are the actual ranges we’re quoting for Montclair work right now. These aren’t national averages; they reflect 91763 lot conditions, older housing stock, and the permit triggers that come with it.
| Scope | Montclair Price Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Bathroom Remodel | $9,000 – $28,000 |
| Home Addition | $45,000 – $130,000 |
| Garage Conversion | $30,000 – $80,000 |
| ADU Construction | $90,000 – $220,000 |
| Cabinet Installation | $4,000 – $13,000 |
| Countertop Installation | $2,000 – $6,500 |
What moves the number is almost always the condition of what’s inside the walls, not the finish level you picked at the showroom. We write allowances into the contract so you can price a remodel honestly before the first hammer swings. Call (855) 382-3257 for a free written estimate.
We Also Serve Cities Near Montclair
We work throughout the Pomona Valley and the Inland Empire. In addition to Montclair, our Home Remodeling team serves Claremont, Ontario, Upland, and La Verne. If you’re on the edge of 91763, you’re still in our service area.
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 Home Remodeling in Montclair
Opening a 1960s Montclair home changes the price because the code-required upgrades hidden behind the stucco become visible to the inspector. Original galvanized plumbing, undersized framing, and outdated electrical are the most common finds, and none of them are optional once the wall is open. We handle this by inspecting first and writing allowances into the contract so the change is priced before work starts, not as a surprise afterward. For an exact quote on your home, call (855) 382-3257.
Yes, pulling a permit often forces upgrades the original scope didn’t include, because Montclair’s inspectors enforce current code on any system exposed during the remodel. This is exactly why we don’t price off finish selections alone. Norm Castellano’s approach is to inspect the home before the contract is written, then include line-item allowances for the upgrades a permit will likely trigger. When something surfaces, you approve the price in writing before we touch it. Call (855) 382-3257 to schedule that initial inspection.
Yes, most detached garages on Montclair’s narrow lots are strong ADU candidates, and the conversion typically runs $30,000 – $80,000. Because lots are narrow and often carry zero-lot-line setbacks, plan review sometimes requires a structural engineer’s letter and fire-rated wall assemblies on the property line side. We handle that entire scope, from the permit submittal through the final inspection. Call (855) 382-3257 for a free ADU feasibility walkthrough.
We keep the schedule intact by planning for hidden damage before we sign the contract. The allowances are the contract. When we open a wall and find a notched header or failed drain line, we stop, write a change order with a line-item price, get written approval, and order the fix immediately so we don’t sit idle waiting on a decision. That’s how a Montclair remodel stays moving when surprises surface. For a contract that accounts for reality, call (855) 382-3257.
If there’s a disagreement about work quality, we work from the contract and the permit inspection record, not an argument. Montclair’s inspectors sign off at each phase, so the work has a paper trail. If something isn’t right, we fix it before we call the job complete. Norm Castellano stands behind the work personally, and we don’t consider a project finished until the final inspection passes and you’ve walked the job with us. Call (855) 382-3257 to talk through your project.
Written by Norm Castellano, Owner at Toolbox Contractors, serving Montclair and the surrounding San Gabriel Valley.