A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Fort Worth
Adding an accessory dwelling unit in Fort Worth typically costs between $180,000 and $380,000 for a site-built unit, while prefab options from brands like Cover and Dvele usually land between $120,000 and $260,000 once site work, foundation, and utility connections are factored in. Those are the real numbers we quote in this market, and they’re in writing before you sign anything. If you’re weighing an ADU in For Worth, you’ll want a builder who knows the city’s wind-load code, its clay soil, and its historic district rules, not someone learning them on your project. Call (682) 204-9686 and we’ll walk you through a line-item price for your specific lot.
Why Benson ADU Fort Worth Is Fort Worth’s Preferred ADU Builders Company
Fort Worth homeowners keep calling us back because we put the price, the permit path, and the warranty on paper before demo day. That’s the whole point of ADU Builders as we operate it. We don’t hand over a verbal ballpark and hope the final invoice lands somewhere near it. Our team pulls the soils report, checks the wind-load zone for your specific address, and confirms whether your street falls inside a historic district overlay before we quote a single number. That matters here more than most Texas cities, because Fort Worth’s patchwork of older close-in neighborhoods like Fairmount and Ryan Place sits on expansive clay and inside design-review boundaries that can stop a project cold if ignored.
We’re part of the Relay Home Co. family, founded in 2006. Every project gets The Relay Visibility Guarantee: a written price before work starts, real-time tracking, and a 365-Day Done Right Promise. Our technicians are background-checked and show up in uniform. And when you call (682) 204-9686, a live person answers. Not a voicemail tree.
ADU Contractor in Fort Worth
An ADU contractor in Fort Worth is the general contractor who pulls the permits, coordinates the soils engineer, schedules the inspections, and manages every trade from foundation to finish. You hire one because building a detached unit in this city means clearing wind-load requirements, foundation engineering for clay, and, in some neighborhoods, a design review board. We do this work as the licensed GC on your project and stay on it through final inspection and the 365-day warranty period.
Detached ADU Construction
Detached ADUs in Fort Worth usually run $200,000 to $380,000 site-built. The structure must be engineered for the city’s high-wind zone, which typically means an 110 mph wind load rating and hurricane ties at roof-to-wall connections. We never skip that engineering. A cheap quote usually omits it, and that omission shows up when spring storm season arrives.
Prefab and Modular ADU Installation
Prefab units from Dvele, Cover, and Mighty Buildings land between $120,000 and $260,000 in Fort Worth after foundation, utility trenching, and crane work. The advantage is speed and a factory-controlled build. The catch is that local site prep still has to meet Fort Worth code, which means the same soils report and wind-load review apply. We handle both the factory order and the local site work under one contract.
ADU Design in Fort Worth
ADU design in Fort Worth has to account for three local conditions that don’t apply in, say, Houston or Austin: wind-load ratings for severe storm season, pier-and-beam or engineered slab foundations for expansive clay, and historic district design guidelines in neighborhoods like Fairmount and Mistletoe Heights. Our design phase starts with a site assessment and a soils report, then we produce plans that meet Fort Worth’s adopted building codes and any overlay district requirements before we ever submit for a permit.
Garage Apartments and Alley Units
In older central neighborhoods, many owners want a garage apartment or an alley-facing unit that keeps the main house’s historic facade untouched. That usually means matching rooflines and exterior materials to the district’s design standards. We’ve done this in Fairmount, where the trick is keeping the original Craftsman’s street view intact while building a fully modern unit behind it.
Studio ADU and Junior ADU Layouts
A studio ADU in Fort Worth typically runs $120,000 to $180,000 if prefab, or $180,000 to $250,000 site-built. A junior ADU, which is a smaller attached or detached unit under 500 square feet, can come in lower. Both still need the same foundation care and HVAC sizing for our summers. We design cooling loads for 100-degree August days, not mild afternoons.
Trusted Brands We Service in Fort Worth
We build with Dvele, Cover, and Mighty Buildings, which means you can research those brands independently before you ever talk to us. Each of them is a known name in prefab construction, and we’re authorized to install their systems in Fort Worth. Because we stock common connection hardware, flashing, and touch-up materials locally, warranty service calls don’t wait on parts shipped from out of state. We also install James Hardie cladding on site-built units, which holds up well to Fort Worth’s hail and humidity.
Common ADU Builders Problems We See in Fort Worth Homes
- Skipped wind-load engineering. Some bids leave out hurricane ties or roof-to-wall connection details. That’s a code violation in Fort Worth’s high-wind zone and an insurance headache after the first hailstorm.
- Standard slab on expansive clay. Central Fort Worth neighborhoods like Wedgwood and East Fort Worth have clay that swells and shrinks with moisture. A standard slab without a soils report cracks within a couple of years. We use pier-and-beam or engineered slab designs matched to the main house.
- Historic district stop-work orders. Start building in Fairmount or Mistletoe Heights without design review approval, and the city will halt the project and force a redesign. We clear that review before submitting for a building permit.
- Undersized HVAC. Fort Worth summers routinely hit triple digits. An ADU with a cooling system sized for a mild climate won’t keep the unit below 80 in July. We size for heat load, not square footage alone.
Pricing for ADU Builders in Fort Worth, TX
A site-built detached ADU in Fort Worth generally runs $200,000 to $380,000. Prefab installations from Dvele, Cover, or Mighty Buildings usually land between $120,000 and $260,000 all-in. A studio ADU or junior ADU starts lower, often $120,000 to $180,000. What moves the price: foundation type (pier-and-beam costs more than a standard slab but lasts longer on clay), wind-load engineering, site access for a crane if you go prefab, and whether your street sits inside a historic district. We give you a written, line-item price before any work starts. Call (682) 204-9686 for a free estimate on your specific lot.
We Also Serve Cities Near Fort Worth
Our crews work throughout the metro, so if you’re just outside the city line, we still cover your project. We serve Haltom City, Kennedale, Bedford, and Colleyville with the same written pricing and warranty terms. Fort Worth remains our busiest market, but the same 365-Day Done Right Promise applies everywhere we build.
Serving Fort Worth, TX - Our Local Coverage Area
We’re based in the Fort Worth 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 Builders in Fort Worth
Fort Worth code requires most residential structures, including ADUs, to meet a 110 mph wind load rating, which means hurricane ties at roof-to-wall connections and impact-resistant materials in many cases. We engineer every ADU roof to that standard and document it in the permit package. If you’re getting quotes, ask to see the wind-load calculation. Call (682) 204-9686 and we’ll show you ours.
Yes. Fairmount and Mistletoe Heights sit inside Fort Worth’s historic district overlay, which means your ADU’s roofline, exterior materials, and placement have to pass design review before you can pull a building permit. We handle that review as part of our pre-construction work. Skipping it gets you a stop-work order, not a shortcut.
Central Fort Worth’s expansive clay shrinks and swells with moisture, which causes slab movement if the foundation isn’t engineered for it. We order a soils report on every detached ADU and use pier-and-beam or an engineered slab matched to the main house. A cheap slab might save you $10,000 up front and cost you five times that in repairs.
Yes. Fort Worth’s 2023 ADU ordinance overhaul removed the owner-occupancy requirement, which is a big change from older city rules and from many other Texas cities. That means you can build a unit specifically as a rental investment in neighborhoods like the Near Southside or Northside. We handle a lot of pure rental-play ADUs now, and the cost picture is the same as an owner-occupied unit.
You need the wind-load engineering report, the permit record, the inspection sign-offs, and photos showing the roof and connections were installed to code. If the work was done without a permit or without wind-load documentation, insurers can and do deny replacement claims. We provide every homeowner with a digital document file at closeout, including the engineering calcs and inspection records. Call (682) 204-9686 to discuss your project and what documentation you’ll receive.
Call Benson ADU Fort Worth for a Written Price
If you’re ready to see real numbers for your lot in Fort Worth, call (682) 204-9686. We’ll schedule a site visit, pull the soils report, check your wind-load zone and any historic district overlays, and hand you a written price before any work starts. No verbal ballparks, no change orders after the fact, and a 365-Day Done Right Promise on the finished unit. Troy Eastman and the Benson ADU Fort Worth team are ready to walk the property with you.
Written by Troy Eastman, Owner at Benson ADU Fort Worth, serving Fort Worth through the Relay Home Co. family.
