A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateADU Company in Southlake, TX
An ADU in Southlake is typically a $180,000 to $400,000 project, depending on whether you choose a prefab unit from Dvele or Mighty Buildings or a fully custom site-built casita. We’re Benson ADU Fort Worth, and we design and build accessory dwelling units, home additions, and room additions across Southlake. The homes here are larger, the lots are wider, and the architectural standards are stricter than almost anywhere else in the Metroplex. That changes how we plan every project. Call (682) 204-9686 to talk through your lot and what’s possible.
Why Southlake Homes Are Different
Southlake’s housing stock is dominated by large, custom-built single-family homes on spacious lots, most constructed from the 1990s onward with brick or stone veneers. That means an ADU here isn’t a box dropped in the backyard. It needs to match the scale and finish level of a home that may have cost a million dollars or more to build. We regularly specify stone wainscot, cedar soffits, and high-end Andersen or Marvin windows because the main house sets a high bar and anything less looks wrong.
The North Texas climate adds another layer. Hot, humid summers mean the ADU needs its own dedicated HVAC system sized correctly, not a window unit or a duct tap off the main house. Severe spring storms bring hail and high wind, so we frame and tie down ADUs to standards that exceed minimum code. And because many Southlake neighborhoods are deed-restricted, HOAs often have architectural review committees that must approve exterior materials, rooflines, and even paint colors before we pull a permit. We handle that paperwork, but you should know it exists and it affects timeline. Homes in neighborhoods like Carillon, Estes Park, and Monticello all have their own standards.
Our Main Southlake Services
Most Southlake homeowners call us for one of three projects: a backyard ADU, a full home addition, or a single room addition. Each has its own Southlake page with deeper detail.
ADU Builders in Southlake
In Southlake, an ADU is rarely just a backyard cottage. It’s often a fully appointed casita with a bathroom, kitchenette, and dedicated climate control, designed to host guests in the same style as the main house. We build both prefab ADUs from brands like Dvele and Boxabl, and site-built units where the lot or HOA calls for a custom exterior. The strict architectural review process in many Southlake neighborhoods means we handle elevation drawings, material samples, and HOA submittals as a standard part of the job. See the full breakdown on our ADU Builders in Southlake page.
Home Addition Contractor in Southlake
A home addition in Southlake often means extending the footprint of a house that was already built large, which is why foundation and roofline integration matter more here than in older neighborhoods with simpler homes. These projects usually involve tying into an existing slab or pier-and-beam foundation, matching brick or stone veneer, and re-engineering roof loads. We lean on James Hardie cladding where matching old veneer isn’t practical, because it holds paint and handles North Texas humidity well. Pricing and scope details are on our Home Addition Contractor in Southlake page.
Room Addition Contractor in Southlake
A room addition is the most common way Southlake homeowners add square footage without a full second-story or wing addition. Think a main-floor guest suite, a dedicated home office, or a larger laundry and mudroom. On Southlake lots, the challenge is usually less about space and more about keeping the addition from feeling tacked on. We run utilities carefully, match ceiling heights, and align windows with the existing elevation so the new room reads as original. Get specifics on our Room Addition Contractor in Southlake 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.
Brands We Service in Southlake
We’re authorized to build with Dvele, Mighty Buildings, Boxabl, and Plant Prefab. These aren’t generic panel kits. Each brand has its own frame system, insulation package, and finish level. We stock common replacement parts locally and can order brand-specific components with faster turnaround than a one-off custom shop. See what each brand offers on our brands page.
Pricing for ADU Company in Southlake, TX
| Service | Typical range in Southlake |
|---|---|
| ADU (prefab, smaller unit) | $180,000 – $260,000 |
| ADU (prefab, fully appointed casita) | $220,000 – $340,000 |
| ADU (site-built, custom casita) | $280,000 – $400,000+ |
| Home addition (single room, moderate finish) | $90,000 – $150,000 |
| Home addition (multi-room, high-end finish) | $150,000 – $275,000 |
| Room addition (basic, no plumbing) | $35,000 – $60,000 |
| Room addition (guest suite with bath) | $60,000 – $110,000 |
| Kitchenette build-out inside ADU | $18,000 – $35,000 |
| Full bathroom addition inside ADU | $22,000 – $45,000 |
| Site prep, foundation, and utility rough-in | $15,000 – $40,000 |
What pushes cost up in Southlake is finish level and HOA compliance. A casita with stone veneer, a full kitchen, and a shingle roof that matches the main house will land at the top of these ranges. A simpler prefab unit with standard finishes lands lower. Whatever the number, you get a written price before any work starts, and that price does not change unless you change the scope.
Neighborhoods We Serve in Southlake
We work across Southlake, from the gated communities near Southlake Town Square to the larger estate lots further out. Crews stage from our DFW office, so scheduling is straightforward and we can usually be on site within a few days of a signed agreement.
- Carillon
- Estes Park
- Monticello
- Timber Lake
- Cambridge Estates
Service Area – Cities Near Southlake
Benson ADU Fort Worth serves Southlake and the surrounding northeast Tarrant County communities. If you’re in Colleyville, TX, Bedford, TX, Euless, TX, or Haltom City, TX, the same written-price guarantee applies. Each city page covers the local permit and HOA landscape in more detail.
Serving Southlake, TX - Our Local Coverage Area
We’re based in the Southlake 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 Southlake
Most Southlake ADUs take 5 to 9 months from signed agreement to final inspection. Prefab units are faster because the shell arrives built, but HOA architectural review and city permitting can add weeks on the front end. Your written agreement includes a schedule with milestones.
In many Southlake neighborhoods, yes. Deed restrictions often require HOA architectural committee approval for any detached structure, and some HOAs have specific rules about size, height, and exterior materials. We prepare and submit the package for you, but approval timelines are set by the HOA, not by us.
Yes. We pull all required city permits and schedule inspections as part of every project. Southlake’s review process is rigorous, especially for structures over a certain square footage, and we include that time in your schedule from day one. You won’t be asked to chase down paperwork. Call (682) 204-9686 for a 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 Southlake Customers Say
"Booked a consult online and met the project manager two days later. Weekly progress updates arrived by text with photos. ADU finished on schedule."
- Hannah W."Communication was the best part. I always knew what was happening that week without having to ask."
- Dolly N."Great build. Inspection delay, the county's fault, pushed things a week, but updates were clear."
- Soo-jin P.
