General Contractor in Montclair — Free Estimate, One Written Price

Fast, Reliable General Contractor Across Montclair

If you’re planning a remodel, room addition, or garage conversion in Montclair, you need a general contractor who knows what’s behind these 1950s tract home walls before the first hammer swings. San Bernardino Contractors has worked extensively across the 91763 ZIP and the neighborhoods radiating off Holt Boulevard and Central Avenue, so we understand the aging galvanized plumbing, undersized electrical panels, and original framing quirks that turn a “simple” Montclair remodel into a whole-system project. Our General Contractor team manages every phase from inspection and permits to finish carpentry and paint. Call (855) 473-5620 to schedule a free estimate and get a written, line-item quote before any wall gets opened.

Call (855) 473-5620

Key Takeaways:

• Montclair’s 1950s Weiner tract homes routinely hide galvanized supply lines, undersized panels, and unbraced garages that a permit-triggering remodel will expose.
• We write priced change orders and get your written approval before any surprise adds a dollar to the contract.
• One contractor handles roofing, windows, kitchens, baths, hardscaping, and ADUs, with access to over 50 named brands across every category.
• Free estimates, line-item quotes, and all permits pulled and inspections passed. Call (855) 473-5620.

Why San Bernardino Contractors Is Montclair’s Preferred General Contractor Company

Montclair homeowners keep calling us for a reason that has little to do with advertising. When you own a three-bedroom, one-bath tract house off Ramona Avenue or a 1970s condo near the plaza, you eventually hit the same wall: the plumbing is original, the panel is maxed out, and the garage was never tied into the foundation. We show up already knowing what to look for. That pre-bid inspection, the one most contractors skip, is why our Montclair CWS service quotes hold and theirs drift upward after demo. Homeowners who have been burned by the surprise change order tend to appreciate a contractor who names the problem before the wall is open, not after.

Ruben Castillo runs our Montclair projects personally. He has walked enough of these original Louis M. Weiner floor plans to know which walls are load-bearing, which panels have room for a new range circuit, and which garages need a full shear retrofit before a conversion makes sense. When a Montclair homeowner calls with a remodel that’s about to turn into a repipe and panel upgrade, the conversation starts with scope and cost, not a vague promise. That’s the local knowledge that keeps our projects on budget and our inspections passing the first time.

General Contractor Services in Montclair

General Contractor Services in Montclair mean something specific here: managing a remodel on a 60-year-old house where the discovered conditions usually cost more than the cosmetic work. A kitchen remodel in Montclair runs $14,000 – $45,000, and the spread exists because one house needs only cabinets and counters while the next needs a repipe, a panel upgrade, and new framing behind the drywall. Our approach is to inspect first, write the allowances into the contract in writing, and price every change order before we touch the next step. You approve the number, we proceed. No draw-schedule shocks, no scope creep you didn’t sign for.

Kitchen and Bath Renovations

A Bathroom remodel in Montclair runs $9,000 – $28,000 depending on whether you’re keeping the original footprint or moving plumbing. We typically see tub-to-shower conversions ($3,500 – $10,000) in the older one-bath homes, where homeowners want a walk-in shower without adding square footage. Our brand access spans Kohler, Grohe, and Toto for fixtures, plus Cambria, Silestone, and Caesarstone for counters, so you choose the finish level from builder-grade to ultra-premium.

Room Additions and Garage Conversions

Adding a bedroom or family room to a Montclair tract home typically runs $45,000 – $130,000, and a garage conversion runs $30,000 – $80,000. The garage number includes the structural retrofit that most of these original 1950s garages need: unbraced walls, uninsulated framing, and a slab that was never tied into the main foundation. We design for that from the first walkthrough.

Construction Company in Montclair

A Construction Company in Montclair has to handle the exterior the way a remodeler handles the interior. Our crews work roof-to-pavers on the same contract: a roof replacement in Montclair runs $8,000 – $20,000, a paver patio runs $3,500 – $11,000, and we handle James Hardie siding, Therma-Tru doors, PGT impact windows, and fencing from Master Halco or Ameristar. That scope means you are not coordinating a roofer, a window crew, and a fence installer from three different companies with three different schedules.

Roofing and Exterior Systems

Montclair sits in the eastern San Gabriel Valley where Santa Ana winds lift aging shingles and hot, dry summers bake stucco until it cracks. We install GAF, CertainTeed, and Owens Corning roofing systems, and our exterior division handles the fascia, soffit, and flashing details that most interior contractors never see. Roof repair runs $400 – $1,800, and we price the full replacement with tear-off, underlayment, and ridge vent written as one number.

Hardscaping and Outdoor Living

Patio covers, shade structures, and paver driveways are high-demand work in Montclair because the summer sun is relentless. A paver driveway runs $7,000 – $18,000 using Belgard, Unilock, or Techo-Bloc pavers, and we do concrete and asphalt at the same address when the job calls for it. One contract, one crew, one point of accountability.

Trusted Brands We Service in Montclair

We are authorized to work with 50-plus named product lines because a Montclair homeowner should be able to pick their cabinet door by name, not by a generic swatch. KraftMaid and Wellborn for cabinetry. Cambria, Silestone, and Caesarstone for quartz. Kohler, Moen, Grohe, Delta, and Toto for plumbing fixtures. On the hardscape side, we regularly install Belgard, Unilock, and Cambridge Pavers, and for driveways we work with Tremron and Techo-Bloc when the design calls for a specific paver profile. You pick the brand, we handle the build. For ADU clients, we have access to prefab systems from Abodu, Dvele, Mighty Buildings, Boxabl, and Plant Prefab, which is rare for a general remodeling contractor. Fast turnaround on material ordering comes from those direct supply relationships, not from a big-box run.

Common General Contractor Problems We See in Montclair Homes

• Original galvanized supply lines weeping behind the drywall. We find this in nearly every Weiner tract home we open, and the fix is a full repipe, not a patch job. We price it as a line item before demo starts.
• Electrical panels with no room for a modern kitchen or a new range circuit. A 1950s panel was sized for a 1950s load. A panel upgrade gets written into the contract as an allowance so it doesn’t become a mid-project surprise.
• Original garages with unbraced, uninsulated walls and no foundation tie-in. When a Montclair homeowner converts a garage or adds a second story, the retrofit is mandatory. We inspect for this before we quote, not after the subfloor is open.
• Failed waterproofing and UV-degraded stucco. Santa Ana winds and high summer heat crack exterior coatings and lift shingles. We handle the re-paper, the siding repair, and the roof in the same scope of work.

Pricing for General Contractor in Montclair, CA

We Also Serve Cities Near Montclair

Our crews work throughout the eastern San Gabriel Valley and the Inland Empire foothills. Beyond General Contractor in Montclair, we serve Claremont, Ontario, Upland, and La Verne. The same inspection-first approach applies everywhere, but the local knowledge changes house by house. If you’re in one of those cities, call (855) 473-5620 and we’ll schedule the same free walkthrough.

FAQs About General Contractor in Montclair