ADU Company in Claremont — Design, Permits and Build Under One Contract

We handle the design, the engineering, and the city permit, then build it. One contract, one crew, one accountable point of contact. Free feasibility check on your lot before you commit.

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ADU Company in Claremont, CA

Kitchen remodeling in Claremont means working inside homes that are often 70 to 100 years old. The Craftsman bungalows near the Village and the Spanish-Revival houses along Indian Hill Boulevard were built when kitchens were 80 square feet, closed off, and never designed for how families cook today. We open those spaces carefully, update the plumbing and electrical that has been in the walls since the Coolidge administration, and build kitchens that fit the house instead of fighting it. Add an ADU on the same lot and the project gets more complex, which is why having one contractor handle both makes sense. Call (844) 934-0236 to talk through your property.

Call (844) 934-0236

Why Claremont Homes Are Different

Claremont is not a typical Inland Empire city. The Claremont Colleges sit at the center of town, the Village has the feel of a New England college square, and the city’s historic-preservation culture means design review actually matters here. A homeowner near Memorial Park who wants an ADU behind a 1930s Spanish Revival will face more scrutiny than someone in a newer subdivision. The city cares about setbacks, rooflines, and whether the new unit looks like it belongs. That is not a complaint. It is the reality of building in a city with a strong sense of itself.

The tree canopy changes construction too. Claremont genuinely earns its “City of Trees” reputation. Mature oaks and sycamores shade lots, drop leaves onto low-slope roofs all autumn, and root systems extend well beyond the drip line. Before we pour a foundation for an ADU, we are thinking about root protection zones and whether the city arborist will need to sign off. And the heat is real. Summer temperatures in the 91711 zip code routinely climb past 95 degrees, with Santa Ana winds pushing dry air down from the San Gabriels in the fall. ADUs here need better insulation than coastal units, and exterior siding needs to be something that will not warp or fade in five years. That is why we use James Hardie fiber-cement products on many Claremont projects.

The housing stock splits into two camps. North of Foothill Boulevard and around the Village, you get the older homes: 1920s through 1950s bungalows with detached garages, narrow lots, and mature landscaping. South of the 210, around Chaparral Elementary and the newer developments, lots open up and ranch-style houses from the 1960s and 70s leave more room to work. An ADU that goes behind a Village bungalow is a different project than one on a half-acre lot near Blaisdell Park. We plan for both.

Our Main Claremont Services

Most Claremont homeowners call us for one of two things: building an ADU on their existing lot, or remodeling a bathroom inside a house that has not been touched in decades. Both jobs share the same Claremont realities: older plumbing, design review, tree constraints, and heat that punishes cheap materials.

ADU Builders in Claremont

Building an ADU in Claremont means working with the city’s design review from day one, not fighting it at the end. We build the full range from shed-conversion units using Tuff Shed structures to design-forward prefab from Cover and Abodu, matched to your lot and budget. A detached garage behind a 1940s bungalow near the Village can become a rental unit, or a new prefab unit can go in the back corner of a larger lot south of the freeway. We handle permits, foundations, utility connections, and interior finishing. ADU Builders in Claremont covers the full process.

ADU Builders in Claremont

Bathroom Remodeling in Claremont

Claremont bathrooms in the older housing stock are small, often original, and frequently hiding galvanized pipes that are well past their service life. We gut and rebuild them with new waterproofing, ventilation that handles Inland Empire heat, and fixtures sized for a 5-by-8 footprint. If the bathroom is part of a larger project, like a primary suite addition or an ADU with its own bath, one contractor handles it all. Bathroom Remodeling in Claremont explains what a rebuild involves.

Bathroom Remodeling in Claremont
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What happens when you call

  1. 1
    A real person answersNo phone trees — you reach a local pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched.
  3. 3
    A background-checked tech heads outLicensed & insured, dispatched right away.
  4. 4
    You approve before work beginsNothing starts until you say go.

Kitchen Remodeling in Claremont

Kitchen remodeling in Claremont usually starts with a house built before 1960 where the kitchen was an afterthought: closed off, under-cabinet lighting nonexistent, one electrical outlet on the entire counter run. The work involves opening walls, rewiring, replumbing, and designing a kitchen that works for how people actually cook now, not how a 1948 floorplan assumed they would. Because we also build ADUs, we can coordinate a kitchen remodel with a new backyard unit on the same lot without juggling two schedules. Learn more about the full scope on our Kitchen Remodeling page.

Full Kitchen Gut and Rebuild

Signs you need it

Your kitchen has original 1950s wiring, the cabinets are pulling away from the studs, and the layout cannot handle more than one person at a time.

What it costs in Claremont

A full gut and rebuild in Claremont typically runs $35,000 to $65,000 depending on square footage, structural changes, and finish level.

How we do it

We demo to the studs, upgrade the electrical panel and plumbing as needed, reframe for the new layout, then install cabinets, counters, appliances, lighting, and flooring with one crew.

Kitchen Refresh and Cabinet Replacement

Signs you need it

Your layout works fine but the cabinet faces are delaminating, the counters are cracked, and the hardware is loose or missing.

What it costs in Claremont

A cabinet replacement and surface refresh in Claremont typically runs $15,000 to $30,000 depending on cabinet quality and countertop material.

How we do it

We remove the old cabinet boxes and counters, install new cabinets and quartz or butcher block tops, add a tile backsplash, and update the sink, faucet, and lighting without moving any walls.

What Kitchen Remodeling Costs in Claremont

Item Typical range in Claremont
Full kitchen gut and rebuild $35,000 – $65,000
Cabinet replacement and refresh $15,000 – $30,000
Countertop replacement (quartz) $4,500 – $9,000

Claremont prices land in the middle of the LA metro range. Older homes with knob-and-tube wiring or galvanized plumbing will push a project toward the higher end because those systems have to be replaced to pass inspection, and that is not optional work. We price the full scope upfront with a written line-item quote, so you know what you are paying before we start.

Will my 1940s Claremont kitchen require electrical upgrades?

Usually, yes. Houses built in Claremont before 1960 often have ungrounded wiring and panels that cannot support modern appliances, so a kitchen remodel commonly includes a panel upgrade and new branch circuits. Call (844) 934-0236 and we will assess what your house actually needs before quoting.

Can you remodel our kitchen while we build an ADU on the same lot?

Yes, and that is one of the main reasons homeowners call us. We schedule the kitchen remodel and the ADU build together so site access, dumpster placement, and inspections happen once instead of twice. Estimates are free.

Brands We Service in Claremont

We are authorized to build and install from a curated set of ADU manufacturers, including Abodu, Cover, and Tuff Shed, and we use James Hardie fiber-cement siding for exterior durability under Claremont’s hot, dry conditions. Matching the right brand to your lot, budget, and design-review constraints is the whole job. See our brands for the full lineup.

Pricing for ADU Company in Claremont, CA

Service Typical range in Claremont
Full kitchen gut and rebuild $35,000 – $65,000
Kitchen refresh and cabinet replacement $15,000 – $30,000
Countertop replacement (quartz) $4,500 – $9,000
Prefab ADU (permits through interior finish) $180,000 – $320,000
Custom site-built ADU $280,000 – $500,000
Shed-conversion ADU (Tuff Shed base) $90,000 – $180,000
Bathroom remodel (existing footprint) $18,000 – $35,000

In Claremont, three things push prices upward: historic-preservation design review, mature tree protection that constrains where a foundation can go, and the need to upgrade original plumbing and electrical in older homes. We write fixed-price quotes with line-item detail and do not issue change orders unless you change the scope.

Neighborhoods We Serve in Claremont

We work across all of Claremont’s 91711 zip code, from the compact older lots near the Village and the Claremont Colleges to the larger ranch properties south of the 210 and the foothill-adjacent streets near Thompson Creek. Our team is in the area regularly, and we schedule site visits within a few business days of your call.

  • The Village
  • Memorial Park neighborhood
  • Blaisdell Park area
  • Chaparral Elementary district
  • Foothill Boulevard corridor

Service Area – Cities Near Claremont

Newport Beach ADU Builders serves Claremont and the surrounding foothill cities. If your property is next door in Montclair, CA, La Verne, CA, Upland, CA, or San Antonio Heights, CA, we can help there too. The permit requirements and design-review process vary from city to city, and we know the differences.

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

Ready to get started? Free estimates · Free written quotes response in Claremont
Call (844) 934-0236

What happens when you call

  1. 1
    A real person answersNo phone trees — talk to a local adu pro.
  2. 2
    You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
  3. 3
    We come out and measureLicensed & insured, at a time that suits you — the visit and the quote are both free.
  4. 4
    You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.

What Claremont Customers Say

★★★★★ 4.8 from 4+ reviews

"Detached unit in the back yard. Utilities trenched, separate meter, and it passed final on the first inspection."

— Steven Nguyen

"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 Ackerman

"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."

— Diego Castillo

How It Works in Claremont

Getting your adu handled is simple and fast.

1

Call or Request a Free Estimate

Tell us about your adu needs and we provide an upfront, transparent quote — no obligation, no hidden fees.

2

Licensed Technician Dispatched

A background-checked, certified technician arrives in Claremont — typically within 30–60 minutes, with parts stocked on the truck.

3

Problem Solved, Guaranteed

We complete the job to your full satisfaction, backed by our warranty and 100% satisfaction guarantee.

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