ADU Company in Montclair, CA
Kitchen remodeling in Montclair is different from a typical suburban reno because most of our work here happens inside 1950s and 1960s single-story tract homes with slab-on-grade foundations, aging wiring, and layouts that were never designed for open living. Homeowners in Montclair typically call us when a cramped galley kitchen no longer works for a growing family, or when they’re adding an ADU out back and want the main house kitchen brought up to the same standard. We’re Holloway ADU Builders, and we handle the full spectrum from ADU construction to the interior finishes that make a unit livable. Call (855) 617-6356 to talk through your project.
Why Montclair Homes Are Different
Montclair is a built-out, post-war bedroom community in the Pomona Valley where single-family lots are modest and largely occupied. That shapes every decision we make here. The classic Montclair home is a 1950s or 1960s tract house with slab-on-grade construction, original wiring that rarely meets today’s kitchen demands, and a detached or attached two-car garage that sits on the lot like an invitation to convert it. When we plan a kitchen remodel or an ADU, we’re not working with open land. We’re working inside an existing footprint that was laid out seventy years ago for a different way of living.
The Pomona Valley climate adds another layer. Montclair runs hot and dry in summer, with intense inland sun and Santa Ana wind events, and very little coastal cooling. That means insulation, shading, and correctly sized cooling are not optional add-ons here. A converted garage with an uninsulated door wall and no cross-ventilation bakes in July, and a kitchen with a west-facing exposure needs window treatment and hood ventilation planned from the start. We think about these things on day one because they affect comfort, energy use, and the long-term durability of finishes.
Our Main Montclair Services
Most Montclair homeowners reach out to us for two things: building an ADU on their existing lot, or remodeling a bathroom inside the main house. Both jobs share the same local challenges, from slab foundations to tight yard access, and both benefit from a contractor who knows the city’s permit process.
ADU Builders in Montclair
Building an ADU in Montclair almost always means either converting an existing detached garage or squeezing a small unit into a narrow backyard behind a single-story ranch home. The 1950s and 1960s tract layout leaves little room for error on placement and setbacks, so we start every project by walking the lot and mapping access. Because we work across prefab, modular, and site-built methods, plus Tuff Shed conversions, the conversation is about matching the approach to your lot, budget, and timeline, not forcing one product onto your property. Read more on our ADU Builders in Montclair page.
Bathroom Remodeling in Montclair
Original Montclair bathrooms are small, often original to the tract build, and typically sit on slab foundations that make moving plumbing a real cost driver. We help homeowners plan around that, whether it’s a full gut remodel or a refresh that adjusts the layout without relocating the drain lines. When a new ADU goes in behind the main house, we often sequence the bathroom work together so one team handles both and the disruption happens once. Details live on our Bathroom Remodeling in Montclair page.
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 involves opening up a closed-off 1960s floor plan, replacing original wiring and plumbing that no longer meets code, and designing for the Pomona Valley’s hot, dry summers. Homeowners in Montclair come to us for two broad reasons: they’ve lived with a cramped galley kitchen for years and want it opened up, or they’ve just built an ADU and need the main house kitchen to match the new standard they’ve created out back. This is the highest-value interior project in the city because it changes how the whole house lives. We’re brand-agnostic in a way that matters here: we’ll specify finishes and materials based on your house and your goals, not on whichever product we’re incentivized to push. That’s the same approach we take with Kitchen Remodeling work across the region.
Galley Kitchen Opening
Signs you need it
You avoid cooking when anyone else is in the house because the walkway between counters is too tight for two people to pass.
What it costs in Montclair
In Montclair, opening a load-bearing wall and reconfiguring a galley kitchen typically runs $35,000 to $55,000 depending on beam size and the condition of the slab above the existing plumbing.
How we do it
We assess the wall for load-bearing status, design the new opening with proper beam sizing, relocate electrical and plumbing as needed, then rebuild the kitchen as one connected space with ventilation planned for Inland Empire heat.
Full Custom Kitchen Renovation
Signs you need it
Every cabinet, appliance, and surface is original or worn and the layout itself no longer supports how your family actually cooks and gathers.
What it costs in Montclair
A full custom kitchen renovation on a 1950s or 1960s Montclair tract home typically costs $65,000 to $100,000 when it includes new electrical service, plumbing rework, and premium finishes.
How we do it
We strip the space to framing, upgrade the wiring and plumbing, rework the layout for the existing slab, then install cabinetry, countertops, lighting, and appliances with a focus on cross-ventilation and heat-resistant materials suited to Pomona Valley summers.
What Kitchen Remodeling Costs in Montclair
| Item | Typical range in Montclair |
|---|---|
| Galley kitchen opening | $35,000 – $55,000 |
| Full custom renovation | $65,000 – $100,000 |
| Kitchen update for ADU interior | $18,000 – $30,000 |
Two things push kitchen remodel prices up in Montclair more than anywhere else nearby: slab-on-grade foundations that make moving drain lines expensive, and 1950s electrical panels that usually need a service upgrade before any modern appliance package can go in. We give written, line-item quotes before work starts so you can see exactly where the money goes.
How long does a kitchen remodel take in Montclair?
Most kitchen remodels in Montclair run five to eight weeks from demo to final walkthrough. Galley openings with a load-bearing beam are on the longer end because structural work requires city inspection. Call (855) 617-6356 to get a timeline for your specific house.
Will I need a permit for a kitchen remodel in Montclair?
Yes, any kitchen remodel in Montclair that touches electrical, plumbing, or structure needs a permit, and we pull all of them for you. Homes built in the 1950s and 1960s often have unpermitted work from previous owners that must be corrected. Call (855) 617-6356 for a free estimate and we’ll walk you through it.
Brands We Service in Montclair
We work across the leading prefab and modular ADU manufacturers, including Cover, Dvele, and Boxabl, which means Montclair homeowners are not locked into a single brand or build method. Parts and finishes from these manufacturers are ordered to spec for each project, and turnaround depends on the unit and the site prep required. See the full picture on our brands page.
Pricing for ADU Company in Montclair, CA
| Service | Typical range in Montclair |
|---|---|
| Prefab ADU (studio, single-story) | $120,000 – $180,000 |
| Prefab ADU (one-bedroom) | $180,000 – $250,000 |
| Prefab ADU (two-bedroom) | $250,000 – $350,000 |
| Modular ADU (single-story) | $160,000 – $260,000 |
| Modular ADU (two-story) | $280,000 – $400,000 |
| Site-built ADU (studio) | $150,000 – $220,000 |
| Site-built ADU (one-bedroom) | $220,000 – $300,000 |
| Garage conversion to ADU | $100,000 – $200,000 |
| Tuff Shed conversion | $75,000 – $120,000 |
| Kitchen remodel (galley opening) | $35,000 – $55,000 |
| Kitchen remodel (full custom) | $65,000 – $100,000 |
| Bathroom remodel | $25,000 – $45,000 |
What pushes an ADU price up in Montclair is almost always the same: tight backyard access that complicates equipment movement, slab foundations that require careful trenching for utilities, and the need to upgrade an aging electrical panel before a new unit can be fed. We give written, line-item pricing before any commitment so you can see exactly where your money will go.
Neighborhoods We Serve in Montclair
Montclair is a compact city, and we move through it efficiently because most of our projects are concentrated in the tract-home neighborhoods that define the city. Whether you’re set back on a side street or backing onto the railroad corridor, we know the lot patterns and access constraints. Our crews work throughout Montclair and can usually be on-site for an estimate within a few days of your call.
- Central Montclair near the Montclair Place mall
- The 91763 residential blocks north of the 10
- Neighborhoods along Ramona Avenue and Hacienda Drive
- Streets bordering the Claremont city line
- South Montclair near the LA County Fairgrounds
Service Area – Cities Near Montclair
Montclair sits in the middle of the Pomona Valley, and we regularly work in the cities around it. Homeowners in Claremont, CA call us with older craftsman-era homes and tight lot constraints. In Ontario, CA we see the same post-war tract stock that defines Montclair. Upland, CA adds hillside lots to the mix, and La Verne, CA brings its own mix of older ranch homes and newer builds.
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 can typically schedule a Montclair site visit within a few business days of your call. Because we’re based nearby in the Pomona Valley and work through Montclair regularly, we often group estimate appointments by neighborhood, which keeps scheduling flexible.
Montclair follows California state ADU law, and we handle all permit filings through the city. The main thing to check on any Montclair lot is whether an HOA covenant affects your specific block, and we’ll review that during the first site walk. Garage conversions on slab foundations are the most common path here.
We handle the entire project from foundation through interior finishing. That includes kitchen and bathroom work inside the new ADU, which matters in Montclair where many homeowners are building a unit they intend to rent or move family into, not just a shell. Call (855) 617-6356 and we’ll walk your lot together.
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
"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Cole Schaefer"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."
— Heather Reed"Every invoice was tied to a completed milestone, so I always knew what I was paying for."
— Justin Kim