A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Claremont, CA
Fielding ADU Builders handles accessory dwelling units, garage conversions, and room additions across Claremont, CA. What changes the work here is the housing stock: a high share of older single-family homes, tight lots, and a city permitting office that expects plans to be right the first time. If you’re weighing a backyard ADU against a garage conversion, call us at (361) 315-4177 and we’ll walk through the numbers with you before anything goes on paper.
Why Claremont Homes Are Different
Claremont’s building patterns span from early 20th-century bungalows near the Claremont Village to mid-century ranches and 1970s and 1980s tract homes further east and north. That spread matters for ADU work. A 1920s garage conversion often starts with a slab that was never engineered for living space, which means new footings or a thickened-edge pour before framing can begin. A 1960s ranch usually has better bones, but the roofline can complicate tying a new ADU into the existing structure.
The terrain adds a second layer. Homes along the northern edge of Claremont, closer to the foothills, often sit on sloping lots where drainage becomes a real factor in ADU placement. The city’s permit office reviews setbacks, lot coverage, and hillside grading requirements carefully. That’s normal, and we plan for it in the initial drawings. Call (361) 315-4177 if you want a straight read on whether your lot is a clean candidate or one that’ll need extra engineering.
Our Main Claremont Services
Most Claremont homeowners who call us are weighing two or three ways to add space, and the right answer depends on the lot, the budget, and how the city views the existing structure. Here’s how each one works in this city.
Room Addition Contractor in Claremont
Room additions in Claremont often mean expanding a kitchen or adding a primary suite onto a home that was built decades before current lot-coverage rules existed. That triggers a setback review, and on smaller lots near the Claremont Village it can require a variance. We handle the drawings, the submittal, and the corrections. Contact Room Addition Contractor in Claremont for specifics on your street and lot size.
Garage Conversion Contractor in Claremont
Garage conversions in Claremont are typically the fastest path to square footage because the shell already exists. The real work is hidden: upgrading the slab, insulating to current Title 24 energy standards, and sometimes reworking the driveway to preserve required off-street parking. On older Claremont homes, the garage may share a wall with the main house, which simplifies utility runs. Garage Conversion Contractor in Claremont is the page to read before you make any decisions.
ADU Builders in Claremont
A detached backyard ADU in Claremont gives you full separation from the main house, which matters if you’re planning to rent it out. The lot has to clear the city’s rear- and side-yard setback rules, and on foothill-adjacent properties we may need a soils report before the foundation design is finalized. We build both conventional stick-frame ADUs and panelized or prefab units. Start with ADU Builders in Claremont for the full breakdown.
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.
Brands We Service in Claremont
We install and finish ADUs and additions built on platforms from Cover, Dvele, and Mighty Buildings, and we also work with conventional framing and James Hardie siding. Turnaround depends on the platform’s factory schedule and your site conditions. Read about our brands and what each one fits best.
Pricing for ADU Company in Claremont, CA
| Service | Typical range in Claremont |
|---|---|
| Garage conversion to ADU | $95,000 – $175,000 |
| Detached backyard ADU (1-bed, 1-bath) | $180,000 – $320,000 |
| Detached backyard ADU (2-bed, 2-bath) | $250,000 – $400,000 |
| Above-garage ADU | $220,000 – $350,000 |
| Prefab ADU (platform-dependent) | $180,000 – $380,000 |
| Room addition (400 – 600 sq ft) | $130,000 – $220,000 |
| Primary suite addition | $110,000 – $190,000 |
| Kitchen expansion | $90,000 – $160,000 |
| Garage conversion (storage/workshop) | $35,000 – $70,000 |
Prices in Claremont move with soil conditions on hillside lots, the age of the existing foundation, and whether the city requires any variance or special review. Whatever the number comes out to, it goes in writing before we start, and that written price is the number on the final invoice.
Neighborhoods We Serve in Claremont
We work across all of Claremont. Typical scheduling for estimates runs within a week, and the office is staffed around the clock if you need to reach someone.
- Claremont Village and the surrounding historic district
- The Towne Ranch and Mountain View areas south of the 10
- Thompson Creek and areas along Indian Hill Boulevard
- Chaparral and northern foothill neighborhoods
- Wheeler Park and nearby streets
Service Area – Cities Near Claremont
Fielding ADU Builders serves Claremont and the surrounding area. We also complete projects in Montclair, CA, La Verne, CA, Upland, CA, and Ontario, CA. Dispatch and scheduling are coordinated from the Garrison Partners Los Angeles area office.
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
We typically schedule estimates within five to seven business days anywhere in Claremont. Call (361) 315-4177 and you’ll speak with a live person, day or night, and we’ll get you on the schedule.
Yes. Claremont requires building permits for ADUs, garage conversions, and room additions, and the city reviews setbacks, lot coverage, and in some cases hillside grading. We pull all permits and handle the inspections as part of the job.
Some Claremont neighborhoods have HOAs with design-review requirements, particularly newer subdivisions and certain planned communities. We’ll help you identify whether your property is covered by one and what the review process looks like before any plans are submitted.
Call (361) 315-4177 to get your free estimate scheduled. Fielding ADU Builders is led by Reed Calloway, and every price is written before work begins.
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
"Solid job. Cabinet delivery was a week behind but they worked around it."
- Ben G."Insulation, drywall, and finishes were all well done. Feels like part of the house."
- Pete O."Built a detached ADU behind our house. The builder is a veteran and runs the site like a platoon: schedule posted, crew on time, everything labeled. Finished within a few days of the date."
- Ken W.
