







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Beaumont, CA
ADU work in Beaumont, CA comes with a specific set of conditions: hot, dry summers, clay-heavy soil in many subdivisions, and a housing stock that runs from early-2000s tract homes to larger custom lots in the hills. We’re Sutton ADU Builders, and we handle detached ADUs, home additions, and room additions across the city, from Sundance to Tournament Hills. What makes Beaumont different from most Inland Empire cities is the pace and pattern of its growth: many homes sit on lots graded for single structures, which means setbacks (the required gap between your new structure and the property line) and drainage often drive the design conversation before framing ever starts. If you’re weighing a build, call (472) 248-8213 and we’ll talk you through what your lot can actually support.
Why Beaumont Homes Are Different
Beaumont sits at roughly 2,600 feet, so it catches more temperature swing than the valley floor. That affects everything from foundation depth to insulation choices. Summer highs regularly climb past 100 degrees, and the soil on many lots in the Sundance and Fairway Canyon areas is an expansive clay that shifts with moisture. We account for that in foundation and drainage planning. In older Beaumont neighborhoods near downtown, lots are smaller and often irregular, which means an ADU or addition has to work within tighter setback tolerances and sometimes an HOA review. Newer subdivisions, like those around Tournament Hills and The Fairways, tend to have cleaner utility records and more recent grading, but we still verify easements before committing to a footprint. The city also requires plan checks through its building department, and depending on the project, you may need a soils report. None of this is unusual to us, but it does mean a Beaumont quote that skips site-specific review is a quote you should be skeptical of. For an honest read on your lot, call (472) 248-8213.
Our Main Beaumont Services
Most Beaumont homeowners who call us are deciding between a detached backyard unit, a full addition, or a smaller room build. Each has its own page specific to Beaumont, so you can read what that job looks like on the ground here.
Home Addition Contractor in Beaumont
A home addition in Beaumont usually means extending the footprint of an existing single-family house: a larger kitchen, an added primary suite, or a second-story bump-out. On Beaumont lots, the first questions are setback and lot coverage, because many mid-2000s subdivisions were platted close to their limits. We also check roof tie-ins carefully, since Beaumont homes see real heat and occasional high winds. This is not a same-day or same-month project in most cases; it’s a structural build that deserves a written scope and a clear schedule before anything is signed. See our Home Addition Contractor in Beaumont page for a full cost breakdown and what to expect on site.

ADU Builders in Beaumont
Detached ADUs are the most common call we get in Beaumont, and for good reason: many lots in Sundance, Fairway Canyon, and Tournament Hills have the side or rear yard space to hold a 400 to 800 square foot unit without eating the whole backyard. The catch in Beaumont is usually utilities and drainage. Running new power, water, and sewer lines across a clay-heavy yard can add cost, and the city will want to see how runoff is handled before it signs off. We work with both stick-built and prefab approaches, including Abodu and Dvele, and we’ll tell you honestly which makes sense for your lot. Read the full details on our ADU Builders in Beaumont page.

Room Addition Contractor in Beaumont
A room addition in Beaumont is the smallest-scale build we take on, but it still hits the same city requirements: permits, plan check, foundation, and final inspection. Common projects here include converting an underused den into a true bedroom, adding a home office, or bumping out a single wall for a wider living space. Because Beaumont sees hard summer heat, we pay extra attention to HVAC extension and window placement so the new room doesn’t become a hotbox in July and August. If you’re not sure whether your project is a room addition or something bigger, start on our Room Addition Contractor in Beaumont page and we’ll help you sort it from there.

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 Beaumont
We service and install several recognized ADU product lines in Beaumont, including Abodu, Cover, Dvele, and Mighty Buildings. Parts and materials for these systems are stocked through our Inland Empire supply chain, not shipped piecemeal from out of state, which keeps typical turnaround tighter than ordering direct. See our brands page for a complete rundown of what we work with and how each system compares on a Beaumont lot.
Pricing for ADU Company in Beaumont, CA
| Service | Typical range in Beaumont |
|---|---|
| Detached ADU (400 – 600 sq ft) | $180,000 – $260,000 before site work |
| Detached ADU (600 – 800 sq ft) | $240,000 – $320,000 before site work |
| Detached ADU (800 – 1,000 sq ft) | $300,000 – $410,000 before site work |
| Prefab ADU (Abodu or similar) | $190,000 – $340,000 depending on site prep |
| Garage conversion to ADU | $120,000 – $220,000 |
| Home addition (200 – 400 sq ft) | $90,000 – $180,000 |
| Home addition (400 – 800 sq ft) | $160,000 – $300,000 |
| Room addition (single room) | $60,000 – $140,000 |
| Foundation and site work | $15,000 – $45,000 depending on soil |
| Utility runs (power, water, sewer) | $8,000 – $25,000 depending on distance |
In Beaumont, the two things that push price higher than the base range are expansive clay soil that needs extra foundation work, and long utility runs on larger lots. Every project gets a written price before any work begins, so the number you approve is the number you build against. Call (472) 248-8213 for a free estimate based on your specific lot and scope.
Neighborhoods We Serve in Beaumont
We work across all of Beaumont’s residential areas, from the older streets near downtown to the larger lots in the newer master-planned communities. Crews are dispatched from our Inland Empire office, and typical response for site visits in Beaumont runs one to three business days depending on the week.
- Sundance
- Tournament Hills
- Fairway Canyon
- Olivewood
- Three Rings Ranch
Service Area – Cities Near Beaumont
Beyond Beaumont, we take on builds in the neighboring cities where the lot conditions and permitting follow a similar pattern. If you’re in Banning, CA, Calimesa, CA, Yucaipa, CA, or San Jacinto, CA, the same written pricing and crew vetting standards apply. Call (472) 248-8213 and tell us which city you’re in; we’ll confirm coverage and get a site visit scheduled.
Serving Beaumont, CA - Our Local Coverage Area
We’re based in the Beaumont 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 Beaumont

Most Beaumont projects go from signed agreement to first day on site in four to eight weeks, depending on plan check timing and whether your lot needs a soils report. We handle the paperwork and keep you updated as the city reviews. Call (472) 248-8213 and we’ll give you a realistic timeline for your specific project.
It depends on your subdivision. Some Beaumont communities, including parts of Tournament Hills and Fairway Canyon, have active HOAs that review ADU and addition plans before the city will issue permits. We’ve worked through those reviews and can tell you early whether your property is likely to need one. Reach us at (472) 248-8213 for specifics.
Yes. We serve all residential areas of Beaumont, including the older lots near downtown, the Sundance and Three Rings Ranch subdivisions, and the newer communities along the Fairway Canyon and Tournament Hills corridors. If you’re inside city limits, you’re in our service area.
Ready to price your ADU or addition in Beaumont? Call (472) 248-8213 for a free estimate. You’ll get a written price before any work begins, and every person who shows up on your property will be someone you’ve already seen by name and photo.
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 Beaumont Customers Say
"Every crew member was vetted and carried a badge, which matters when they are around your family for months. Tidy site every day."
- Daniel F."Itemized estimate with allowances laid out. Final cost was within a hair of the quote."
- Naomi R."Backyard ADU for my mother. The project manager showed ID and walked me through the permit steps, the foundation plan, and the schedule. Moved her in on time."
- Margaret C.



