ADU Company in Montclair, CA
Montclair homeowners call us most often for kitchen remodeling, and the pattern is consistent: a 1950s or 60s ranch with the original galley layout, worn cabinets, and an oven alcove too small for anything built after 1985. The Inland Empire heat means a kitchen renovation here has to account for real ventilation loads and afternoon sun, especially in west-facing rooms. We handle the full build and interior fit-out under one company, so the cabinets, countertops, and plumbing are our work, not a sub’s. If you’re weighing a kitchen remodel in Montclair, call (855) 382-8121 for a free estimate.
Why Montclair Homes Are Different
Montclair is a fully built-out San Bernardino County city, which means nearly every project we take on involves an existing mid-century home rather than a new lot. Most of the housing stock is single-story tract construction from the 1950s through the 1970s, on modest R-1 lots with detached garages at the rear and block-wall fencing. That shapes everything we do: floor plans drawn around load-bearing walls that were never meant to move, plumbing stacks in odd places, and kitchens sized for a different era.
The climate adds another layer. Montclair sits in the Inland Empire, where summer temperatures routinely climb into the high 90s and hot, dry Santa Ana winds stress exterior materials. A kitchen remodel here needs finishes that won’t warp or fade, and ventilation that actually moves hot air out of the house. We factor that into every material recommendation we make in the 91763 ZIP code, from cabinet finishes to range hood sizing.
Our Main Montclair Services
Two services drive most of the calls we get from Montclair homeowners: ADU construction and bathroom remodeling. Both share the same local constraints, tight lots, aging plumbing, and a city where neighbors and code enforcement pay close attention.
ADU Builders in Montclair
The signature Montclair ADU pattern is a rear alley-accessible lot where the existing detached garage is the only realistic footprint. That means garage conversions and above-garage units, not open-yard builds, are the bread and butter here. We work across prefab and site-built options, including brands like Abodu, Cover, and Boxabl, and we match you to the right system for a narrow rear yard rather than pushing one vendor. See ADU Builders in Montclair for the full breakdown of what’s possible on an R-1 lot in 91763.
Bathroom Remodeling in Montclair
Montclair’s original bathrooms are compact, often 5-by-8 feet, with cast-iron plumbing that’s been in the ground since the Eisenhower administration. A remodel here usually means replacing the drain lines while we’re at it, not just swapping tile and fixtures. We handle the plumbing, tile, waterproofing, and the full interior fit-out with our own crew. See Bathroom Remodeling in Montclair for specifics on layouts, timelines, and what to budget.
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 is our most requested service, and the reason is simple: these homes were built when kitchens were closed off, small, and purely functional. In a Montclair ranch from the 1960s, you’re almost always working with a galley layout, a load-bearing wall between the kitchen and living room, and only one realistic way to open the space up. The Inland Empire climate also shapes the job: a kitchen that bakes in afternoon heat needs ventilation and materials that can take the thermal swings without cracking. For the full scope of what we offer, see Kitchen Remodeling. We’ve been doing this work in Montclair since 2012, and every project starts with a free estimate at (855) 382-8121.
Full Kitchen Renovation
Signs you need it
You’re working around dead corners, missing drawers, and a layout that bottlenecks every time two people are in the room.
What it costs in Montclair
A full kitchen renovation in Montclair typically runs from $35,000 to $65,000 depending on layout changes, cabinet lines, and whether walls come down.
How we do it
We start with a measured floor plan, confirm which walls are load-bearing, then run plumbing and electrical updates before cabinets, counters, and tile go in.
Kitchen Cabinet Installation
Signs you need it
Your cabinet boxes are delaminating, doors are misaligned, and shelves are bowing under normal dish weight.
What it costs in Montclair
Cabinet installation alone in Montclair runs roughly $6,000 to $15,000 depending on whether you choose stock, semi-custom, or full custom boxes.
How we do it
We order to the millimeter from measured openings, build out the support rails, then hang and level each box before faces, hardware, and crown go in.
What Kitchen Remodeling Costs in Montclair
| Item | Typical range in Montclair |
|---|---|
| Full kitchen renovation | $35,000 – $65,000 |
| Cabinet installation | $6,000 – $15,000 |
| Countertop replacement (quartz or granite) | $5,000 – $12,000 |
How long does a kitchen remodel take in Montclair?
A full kitchen remodel in Montclair takes four to eight weeks on site. Permit review through the city adds another two to four weeks before we start, so plan for roughly two to three months from signed contract to finished kitchen.
Will the price change once work starts?
No. We quote on a written line-item basis and don’t issue change orders for things we could have caught in planning. If your 1960s plumbing stack is corroded behind the wall, we flag it before we start, not after we open the wall. Call (855) 382-8121 for a fixed estimate.
Brands We Service in Montclair
We specify and install across a defined roster of manufacturers rather than pushing one system. In Montclair, the most relevant names for ADU work are Cover, Dvele, and Boxabl, each suited to different lot conditions and budgets. Parts and finish samples are ordered directly from each manufacturer, keeping lead times predictable. See our brands for the full comparison.
Pricing for ADU Company in Montclair, CA
| Service | Typical range in Montclair |
|---|---|
| Full kitchen renovation | $35,000 – $65,000 |
| Kitchen cabinet installation | $6,000 – $15,000 |
| Countertop replacement (quartz or granite) | $5,000 – $12,000 |
| Bathroom remodel (full gut) | $25,000 – $45,000 |
| Bathroom remodel (cosmetic update) | $12,000 – $22,000 |
| ADU garage conversion | $120,000 – $200,000 |
| ADU above-garage build | $180,000 – $280,000 |
| ADU detached backyard unit | $200,000 – $350,000 |
| Prefab ADU (full project) | $150,000 – $300,000 |
What pushes prices up in Montclair is usually the lot itself: rear alley access can complicate equipment staging, and older homes often need electrical service upgrades before a kitchen or ADU can carry the new load. We quote upfront with a written line-item scope, so the price you approve is the price you pay.
Neighborhoods We Serve in Montclair
We work across all of Montclair’s 91763 ZIP code, from the original tract neighborhoods near the 10 freeway up to the newer pockets along the Pomona border. Typical response time for an estimate visit anywhere in the city is one to three business days.
- North Montclair (near Monte Vista Avenue)
- South Montclair (below the 10 freeway)
- Benito Street corridor
- Kingsley Street tract
- Fremont Avenue neighborhoods
Service Area – Cities Near Montclair
We serve Montclair and the surrounding Inland Empire communities from our base in Eastvale. If you’re in a neighboring city, we can usually get to you within a few business days. We regularly work with homeowners in Claremont, CA, Ontario, CA, Upland, CA, and La Verne, CA on the same kinds of mid-century kitchens and tight-lot ADU projects we handle in Montclair.
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 schedule estimate visits across Montclair within one to three business days. Because we’re based in Eastvale, the drive is short and we can often combine your visit with a neighboring appointment if you’re flexible on timing. Call (855) 382-8121 to book a slot.
Yes. Montclair requires building permits for any structural change, plumbing relocation, or ADU construction, and the city’s code enforcement division is active. We pull permits on every job and handle the inspection process for you, so you’re never left managing a city file on your own.
We see that on nearly every Montclair property. The work usually includes a panel and drain-line assessment before we start, and we build any required upgrades into the written quote rather than surprising you mid-project. It’s rare that a 1960s kitchen or bathroom doesn’t need at least some electrical or plumbing work.
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
"Every invoice was tied to a completed milestone, so I always knew what I was paying for."
— Rafael Castillo"Garage conversion to a one bedroom unit. He handled the plans, the city submittal, and every round of corrections. Took six months from first meeting to final inspection and he never once made the permit process my problem."
— Lucia Garcia"Unit came out great and the tenant is happy. The timeline ran long, largely because of how slow the city was on plan check, though a couple of the delays were scheduling on their end."
— Lucia Rodriguez