ADU Company in Montclair, CA
Kitchen remodeling in Montclair means working inside 1950s and 60s stucco tract homes where the original galley footprint, aging electrical, and hot inland summers all shape the plan. Most Montclair kitchens were built small, boxed-in, and on slabs with undersized panels, so a remodel here usually involves more than cabinets and counters. Westminster ADU Builders has served Montclair since 2016, handling kitchen remodels, ADU construction, and bathroom work with one team from first cut to final fixture. Call (833) 620-3521 to talk through your kitchen, your lot, or both.
Why Montclair Homes Are Different
Montclair’s housing stock runs heavily to single-story stucco tract homes from the 1950s through the 1970s, built fast and simple when the Pomona Valley was still mostly orange groves. Those homes sit on lots that are genuinely generous by Southern California standards, which is why the 91763 corridor has become an ADU hotspot. But the bones underneath matter: concrete-block and wood-framed detached garages with slab-on-grade floors, older 100-amp electrical panels, and shallow utility runs that were never designed to feed a second dwelling.
The climate punishes shortcuts. Summer stretches of 95 – 100°F are normal here, and Santa Ana winds push dry heat through every gap in a building envelope. Any ADU or kitchen remodel in Montclair has to account for real insulation, shaded south and west exposures, and HVAC sizing that does not assume coastal temperatures. A garage conversion without new insulation becomes unlivable by June. Add in the city’s many mid-century garages built with shared walls to the main house, and you get a scope picture that looks very different from what a Claremont or La Verne homeowner faces.
Our Main Montclair Services
Montclair homeowners call us most often about two things: building an ADU on a lot that can actually support one, and remodeling a bathroom inside a house that still runs on its original plumbing. Here is what each looks like in this city.
ADU Builders in Montclair
Montclair’s mid-century tract lots are some of the best ADU candidates in the Pomona Valley, but the path to permits runs through older panels, concrete-block garages, and utility lines that often need upgrading first. We walk each property with those realities in mind from the first visit, not as surprises after demo starts. Whether the right answer is a detached rear unit or a garage conversion, we show you the full cost picture before you commit. See ADU Builders in Montclair for the deep dive on this city’s specific path.
Bathroom Remodeling in Montclair
Bathrooms in 1950s – 70s Montclair tract homes were built to 5-foot-by-8-foot standards with cast-iron drains and minimal ventilation. Remodeling one now means addressing galvanized supply lines, undersized exhaust fans, and layouts that never anticipated two working adults sharing the space. We handle the full scope, from moving a wall to retiling a shower, with the same team that builds our ADUs. Read more at Bathroom Remodeling in Montclair.
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.
Kitchen Remodeling in Montclair
Kitchen remodeling in Montclair typically costs $28,000 – $75,000 for a full remodel, with smaller refreshes running $12,000 – $28,000. The original galley kitchens in these 1950s and 60s stucco homes were built for one cook, minimal storage, and appliances that drew far less power than today’s induction ranges and double ovens. That means most full remodels here include opening walls, upgrading the panel, and adding ventilation the original build never had. For the full scope of what we do, see Kitchen Remodeling.
Full Kitchen Gut and Rebuild
Signs you need it
The original layout still has walls closing off the kitchen from the dining area, cabinet frames are delaminating from decades of Inland heat, and the electrical panel cannot support a second appliance running at once.
What it costs in Montclair
A full kitchen remodel in Montclair runs $28,000 – $75,000 depending on layout changes, cabinet grade, and how much electrical and plumbing rework the 1950s – 70s structure demands.
How we do it
We open walls to verify framing and plumbing, replace or reroute supply lines and drains, upgrade the panel if needed, then build the new layout with modern cabinets, counters, and ventilation before finishing with paint and trim.
Cabinet Refacing and Countertop Replacement
Signs you need it
The cabinet boxes are still square and solid, but door hinges sag, drawer slides stick, and the laminate counters have burns, chips, or seams pulling apart in the dry inland air.
What it costs in Montclair
Cabinet refacing typically runs $8,000 – $14,000 in Montclair, and replacing counters adds another $3,000 – $10,000 depending on material and linear footage.
How we do it
We remove doors and drawer fronts, press new veneers over the existing boxes, replace hardware and hinges, then template, fabricate, and install the new counter surface with seams sealed for the valley’s heat swings.
Galley Kitchen Opening to Living Space
Signs you need it
The kitchen is walled off from the living room, the house feels smaller than its square footage, and the family gathers in the dining area while the cook stays isolated.
What it costs in Montclair
Opening a load-bearing wall between the kitchen and living area in a Montclair tract home runs $18,000 – $45,000 including the beam, drywall, flooring blend, and the relocated electrical.
How we do it
We determine whether the wall is load-bearing, size and install the correct beam if it is, reroute any electrical running through the wall, patch and blend the ceiling and flooring, then finish the opening with casing that matches the house.
What Kitchen Remodeling Costs in Montclair
| Item | Typical range in Montclair |
|---|---|
| Full kitchen remodel | $28,000 – $75,000 |
| Cabinet refacing | $8,000 – $14,000 |
| Countertop replacement | $3,000 – $10,000 |
Will a Montclair kitchen remodel need a permit?
Yes, any change to walls, electrical, or plumbing requires a permit from the city of Montclair. We pull permits and handle inspections for every kitchen remodel, so the work is signed off before you use the room.
How long does a kitchen remodel take in Montclair?
Plan for 6 – 10 weeks for a full gut remodel and 2 – 4 weeks for a refacing or counter replacement. The timeline depends on permit review speed and whether we find unexpected framing or wiring once walls open up. Call (833) 620-3521 for a realistic schedule on your kitchen.
Brands We Service in Montclair
We are not tied to one prefab brand. We specify Cover, Dvele, and Mighty Buildings where they fit the lot, and we compare each against a traditional site-built ADU so you see the tradeoffs in real numbers. Learn more at our brands.
Pricing for ADU Company in Montclair, CA
| Service | Typical range in Montclair |
|---|---|
| Full kitchen remodel | $28,000 – $75,000 |
| Cabinet refacing | $8,000 – $14,000 |
| Countertop replacement | $3,000 – $10,000 |
| Bathroom remodel (small) | $14,000 – $26,000 |
| Bathroom remodel (full) | $28,000 – $55,000 |
| Shower replacement | $7,000 – $16,000 |
| ADU garage conversion | $150,000 – $250,000 |
| ADU detached new build | $250,000 – $400,000 |
| Prefab ADU (site work and install) | $150,000 – $450,000 |
Montclair prices push toward the upper end when the house still has its original 100-amp panel, the garage slab needs a new foundation perimeter, or the utility run from the street has to be trenched deeper. We give you a written line-item quote before work starts, and that number does not change once the contract is signed.
Neighborhoods We Serve in Montclair
We work throughout the 91763 ZIP code, from the streets around Montclair Place mall to the residential blocks east of Central Avenue and the older lots near Ramona Avenue. Our crews are local to the Inland Valley and can usually get a first walk-through scheduled within a week of your call.
- Central Montclair
- Montclair Heights
- The area around Montclair Place
- Ramona Avenue corridor
- Streets off Central and State
Service Area – Cities Near Montclair
Westminster ADU Builders also serves the cities around Montclair in the Pomona Valley. We work in Claremont, CA, Ontario, CA, Upland, CA, and La Verne, CA, handling the same ADU, kitchen, and bathroom scopes with the same team and the same upfront pricing.
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 ADU Company in Montclair
We typically schedule a property walk-through within a week of your call. After that it takes 2 – 4 weeks to produce plans and a full line-item quote, depending on whether the scope is a kitchen remodel, an ADU, or both. Call (833) 620-3521 to get on the calendar.
Most Montclair homes are not in HOAs, but a few newer pockets and planned developments do have association rules. We check that during the first conversation so it does not surface after you have paid for plans.
Yes, and it is often the more efficient route, since both scopes share a permit pull, a dumpster, and trade crews. One team, one contract, from foundation to finished kitchen. Call (833) 620-3521 to schedule your free estimate.
What happens when you call
- 1A real person answersNo phone trees — talk to a local adu pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Montclair Customers Say
"Sound insulation between the unit and the main house is better than I expected. You genuinely cannot hear the tenant."
— Farah Hassan"He gave us a realistic rental number for the finished unit rather than the optimistic one, and it's renting for about what he said."
— Erin Quinn"The kitchenette layout he suggested made better use of the space than the one on our original sketch."
— Lisa Hayes