ADU Company in Claremont, CA
Cottage ADU Builders handles kitchen remodeling in Claremont with a clear focus: mid-century homes on generous lots that need more than a surface refresh. Claremont’s 1940s to 1970s housing stock means we regularly open walls to find galvanized plumbing that’s past its lifespan, undersized electrical panels, and layouts that were built for a different era. Add the Inland Empire’s summer heat, where kitchens can become unusable from July through September, and a remodel here is as much about ventilation and insulation as it is about cabinets and countertops. Call (866) 808-7312 to schedule a free estimate on your Claremont kitchen.
Why Claremont Homes Are Different
Claremont is a small, highly regulated college town, home to the seven Claremont Colleges, and that identity shapes every residential project we take on. The city’s ADU rules are notably friendly compared to neighboring jurisdictions, but the design-review culture is exacting. Homeowners near the historic Craftsman bungalows by the Village face a different set of expectations than those in the 1960s ranch tracts north of Foothill Boulevard or east toward Padua Hills. A detached ADU on a street with 1920s bungalows needs to read as compatible with that architecture, not as a dropped-in box.
The housing stock itself runs from Craftsman bungalows near the Village to mid-century single-family homes from the 1940s through 1970s on generous lots. Many of those mid-century homes have detached garages or alley access, which makes garage conversions and new ADU construction feasible from a footprint standpoint. But older utility infrastructure is common. We routinely upgrade electrical services and replace cast-iron drain lines before any new square footage goes in. Claremont’s hot-summer Mediterranean climate means summer days over 100°F and dry Santa Ana wind events. Exterior materials have to resist years of intense sun, and roof-mounted solar is common enough that we plan ADU roof loads accordingly.
Our Main Claremont Services
Claremont homeowners call us most often about two projects: adding an ADU and bringing an aging bathroom up to current standards. Both are covered below, and each links to its own detailed Claremont page.
ADU Builders in Claremont
ADU construction in Claremont means working through the city’s design-review expectations while still getting a unit built efficiently. We work with prefab and modular systems from brands like Abodu and Plant Prefab, which gives Claremont homeowners a faster path to a permitted unit than traditional stick-frame construction. The catch is that cookie-cutter designs often run into pushback near the colleges, where historic preservation concerns are real. We handle that by matching exterior finishes and rooflines to the surrounding neighborhood. Whether you want a detached unit for a Claremont Colleges faculty rental or a garage conversion for family, start with our dedicated Claremont page: ADU Builders in Claremont.
Bathroom Remodeling in Claremont
Bathrooms in Claremont’s mid-century homes tend to be small, and that’s the first thing homeowners want to change. We frequently reconfigure 1950s and 1960s bathrooms by relocating walls, expanding showers, and replacing original cast-iron waste lines that have corroded over six decades. Claremont’s hard water also leaves scale buildup that shortens fixture life, so we recommend finishes that hold up. If you want the full breakdown of what a bathroom remodel costs and the timeline involved, see our Claremont bathroom page: Bathroom Remodeling in Claremont.
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 Claremont
Kitchen remodeling in Claremont starts with a simple reality: most of the kitchens we open up in this city were built between the 1940s and 1970s and have had nothing more than paint and maybe a new appliance or two. The plumbing is often galvanized, the electrical is underpowered for today’s appliances, and the ventilation was never designed for a summer day above 100°F. A good Claremont kitchen remodel solves all three, and we do it as a single project from the first demolition cut to the final walkthrough. Cottage ADU Builders has served Claremont since 2012, and we approach every kitchen as a structural and systems project before it becomes a cabinetry project. Learn more about our process on our Kitchen Remodeling page.
Full Kitchen Renovation
Signs you need it
Your kitchen in Claremont still has the original layout from the Eisenhower or Nixon administration, and it fights you every day: no landing space, no ventilation that actually moves air, and outlets that trip when the microwave and toaster run at once.
What it costs in Claremont
A full kitchen renovation in Claremont typically runs $45,000 to $90,000 depending on the size of the room, the scope of structural changes, and the finish level you choose.
How we do it
We start by opening the walls to assess framing, plumbing, and electrical, then replace what’s failed, reconfigure the layout, and rebuild with new cabinetry, counters, appliances, lighting, and ventilation sized for the room.
Kitchen Update and Refresh
Signs you need it
The bones of your kitchen work but it looks dated, the cabinet doors are delaminating from decades of Inland Empire dry heat, and the countertops show wear but the layout is fine.
What it costs in Claremont
A cosmetic kitchen update in Claremont usually falls between $18,000 and $40,000, covering new cabinet faces or refacing, countertops, a backsplash, fixtures, and paint.
How we do it
We replace cabinet fronts and hardware, install new countertops and a backsplash, swap out the sink and faucet, add under-cabinet lighting, and repaint, leaving the plumbing and electrical in place where they’re already sound.
What Kitchen Remodeling Costs in Claremont
| Item | Typical range in Claremont |
|---|---|
| Full kitchen renovation | $45,000 – $90,000 |
| Kitchen update and refresh | $18,000 – $40,000 |
| Structural or utility upgrade (electrical panel, plumbing replacement) | $5,000 – $15,000 added to project scope |
Structural surprises and utility upgrades add to the base cost. We give you a written line-item quote before work starts, and we don’t change that number unless you change the scope.
Do you handle the permits for a Claremont kitchen remodel?
Yes. We pull all required Claremont permits, schedule inspections, and close out the permit at the end of the job. Most kitchen remodels in Claremont trigger plumbing, electrical, and sometimes mechanical permits.
Can I remodel my kitchen and add an ADU at the same time?
Yes, and Claremont homeowners do this often, especially on lots where the detached garage is becoming an ADU while the main house kitchen gets updated. One contractor for both means one schedule and one point of contact from permit to punch-list.
Brands We Service in Claremont
We work with the brands you’ve already been researching. For Claremont ADU projects, that includes Plant Prefab and Abodu for modular units, Tuff Shed where a simpler detached structure fits the zoning, and James Hardie fiber-cement siding for exterior durability in Claremont’s sun-heavy climate. See our brands for the full list and what each system is best suited to.
Pricing for ADU Company in Claremont, CA
| Service | Typical range in Claremont |
|---|---|
| Full kitchen renovation | $45,000 – $90,000 |
| Kitchen update and refresh | $18,000 – $40,000 |
| Detached ADU (modular or prefab) | $180,000 – $400,000 |
| Garage conversion ADU | $120,000 – $220,000 |
| Primary bathroom remodel | $25,000 – $60,000 |
| Secondary bathroom remodel | $15,000 – $35,000 |
What pushes a Claremont project toward the top of those ranges is usually utility replacement: galvanized supply lines, a 100-amp panel that needs upgrading before an ADU can be connected, or cast-iron drain lines that have reached the end of their service life. We quote the job as a fixed price with a written line-item breakdown, so the number you approve is the number you pay.
Neighborhoods We Serve in Claremont
We work across Claremont and the surrounding foothill communities. Response time for an estimate visit within Claremont is typically one to three business days depending on our schedule.
- The Village area and Claremont Colleges district
- North Claremont ranch tracts near Foothill Boulevard
- Eastern Claremont toward Padua Hills
- Claraboya and the neighborhoods along Base Line Road
- Western Claremont near the La Verne border
Service Area – Cities Near Claremont
Cottage ADU Builders also serves homeowners in the cities directly surrounding Claremont. If your property is in Montclair, CA, La Verne, CA, Upland, CA, or San Antonio Heights, CA, we can provide the same free estimate and fixed-price quote process. The utility challenges and housing-age patterns in these foothill communities are similar to Claremont’s, so our approach carries over directly.
Serving Claremont, CA — Our Local Coverage Area
We’re based in the Claremont 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 Claremont
Most Claremont projects go from signed contract to start within three to six weeks. The variable is permit review time with the city, which can stretch longer for projects in design-review areas near the colleges. We give you a realistic schedule at the estimate visit.
Yes. We prepare the drawings and documentation the city needs, attend any required design review meetings, and revise plans as reviewers request. That’s part of our permit-to-punch-list scope on every Claremont ADU and remodel, not an add-on.
Yes, Cottage ADU Builders is a state-licensed, insured and bonded contractor serving Claremont and the broader Inland Empire. We pull permits, pass inspections, and carry appropriate coverage for the residential work we do. Call (866) 808-7312 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 Claremont Customers Say
"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."
— Ernesto Hernandez"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."
— Shane Miller"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."
— Amanda Walsh