







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 Crowley
Adding an ADU in Crowley usually costs between $180,000 and $320,000 for a detached unit, while garage conversions run $90,000 to $160,000 depending on what’s behind the walls. Those are real ranges we write into contracts every month for homeowners near Main Street, along Deer Creek, and through the newer subdivisions east of Crowley Road. We’re ADU Builders who show up to Crowley jobs with a written price before the first shovel turns, not a verbal guess that shifts once demo starts. Call (682) 204-9686 and we’ll walk the lot with you, check the sewer and well situation, and put numbers in writing.
Why Benson ADU Fort Worth Is Crowley’s Preferred ADU Builders Company

Crowley homeowners keep calling us because we’re the only builder in the area pairing prefab brand access with a written price that doesn’t move. Our Crowley jobs have turned up unrecorded septic tanks, cloth-wrapped wiring, and clay soil movement enough times that we already know what to look for before we bid. That local familiarity means your quote accounts for reality, not a best-case scenario.
We send background-checked, uniformed crews to Crowley and a live person answers the phone around the clock. Troy Eastman runs the operation, and he insists every Crowley project gets a 365-Day Done Right Promise in writing. If something isn’t right within a year, we come back and make it right. No phone tag, no chasing a voicemail.
We’re not a corporate chain. We’re part of the Relay Home Co. family, founded 2006, but this location is independently owned and operated. The crews you see in Crowley are the same people who’ll answer when you call to check on the job.
ADU Contractor in Crowley
An ADU Contractor in Crowley handles the full build: permits, foundation, framing, utilities, and final inspection. You need one when you’re adding a backyard cottage for family, a rental unit, or a workspace, and you don’t want to juggle five different subs yourself. In Crowley, that work typically runs $180,000 to $320,000 for a detached unit depending on square footage, site prep, and what the existing lot throws at us. Benson ADU Fort Worth acts as your single point of contact from lot walk to certificate of occupancy.
Detached and Studio Builds
A detached ADU in Crowley gives you a fully separate unit with its own entrance, kitchen, and bath. Studio layouts in the 400 to 600 square foot range are the most popular for rental income, and they typically land between $180,000 and $240,000 with utility hookups. We’ll walk your setback lines and flag any old septic or well issues before the foundation crew arrives.
Garage and Junior ADU Conversions
A Junior ADU (JADU) converts existing space, often a garage or attached bonus room, into a small dwelling with a kitchenette and its own entry. In Crowley, garage conversions run $90,000 to $160,000, but that number can move once we open the walls and see what the original builder left behind. We write allowances into the contract for exactly that, so you’re never surprised by a change order you didn’t approve.
ADU Design in Crowley

ADU Design in Crowley means matching a new unit to a lot that might hold a 1920s farmhouse, a 1990s tract home, or something in between, while making sure it stands up to Texas heat and clay soil. Design covers floor plan, elevations, foundation strategy, and exterior material choices. In Crowley, design work is bundled into our project pricing, not billed as a separate line item that inflates later. You’ll see the full budget, including design, before you sign anything.
Site-Built and Prefab Panel Options
Site-built ADUs are framed on your lot, which gives us full control over matching rooflines and accommodating odd lot shapes. Prefab panel systems from brands like Boxabl and Cover arrive in factory-built sections we assemble on a prepared foundation, which can cut on-site build time significantly. Both paths get the same written price guarantee and the same 365-Day Done Right Promise.
Foundation and Clay Soil Planning
Crowley sits on expansive clay soil that shifts with wet and dry cycles, so foundation design matters more than most people expect. We specify pier-and-beam or reinforced slab systems based on a soils report, and we plan drainage so water never pools against the new unit. This is where a generic quote falls apart and a Crowley-specific one holds.
Trusted Brands We Service in Crowley
We’re authorized to build with prefab systems from Cover, Dvele, Mighty Buildings, and Boxabl, so you can research the product before we ever sign a contract. Those are names you can look up independently, not a mystery product we picked from the cheapest supplier. For Crowley jobs we coordinate delivery and staging directly with the manufacturer, and our crews handle the site prep, foundation, assembly, and finish work on your lot in Crowley. You get one team accountable for the whole build instead of three companies pointing at each other.
Common ADU Builders Problems We See in Crowley Homes
- Unrecorded septic tanks and abandoned wells: Older lots near Main Street often have tanks or wells that never made it onto county records. We scan before excavation and price decommissioning in writing if we find one.
- Cloth-wrapped wiring behind old walls: Opening a 1920s or 1950s wall to tie in an ADU frequently reveals wiring that won’t pass current code. The permit requires the upgrade, so we write the allowance into your contract on day one.
- Clay soil movement between two structures: Crowley’s expansive clay causes differential settling when a new ADU foundation and an old house foundation respond differently to moisture. We isolate the foundations and detail the connection so movement doesn’t crack the junction.
- Undersized framing and failed waterproofing: Older farmhouse additions often have floor joists that were never sized for modern loads, and the original siding hid a waterproofing membrane that’s now failing. We catch both during inspection and price the fix before we pour.
Pricing for ADU Builders in Crowley, TX
A detached ADU in Crowley typically runs $180,000 to $320,000. Garage and JADU conversions fall between $90,000 and $160,000. What moves the number: square footage, site prep, whether we hit an old septic tank or well, and what the permit triggers inside the main house. We write allowances into every Crowley contract for opened-wall code upgrades, so a quote doesn’t quietly become a bigger bill. Call (682) 204-9686 and we’ll give you a written price based on your actual lot and house, not a per-square-foot guess.
We Also Serve Cities Near Crowley
Our crews work across Crowley and the surrounding area, including Burleson, Kennedale, Fort Worth, and Haltom City. If you’re just outside the Crowley city line, give us a call and we’ll confirm coverage before you take time off work.
Serving Crowley, TX - Our Local Coverage Area
We’re based in the Crowley 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 Crowley
Yes, in most cases an ADU cannot simply tie into an existing residential septic system, because those systems were sized for the original bedroom count and adding a full second dwelling exceeds the capacity. We verify the septic system’s design capacity, check whether a new connection to municipal sewer is available on your street, and price whichever path the local code requires before foundation work starts. Call (682) 204-9686 and we’ll check your specific lot.
We stop excavation, document the find, and price the decommissioning in writing before touching it. Older Crowley lots near Main Street frequently have unrecorded tanks or wells, and the county requires proper decommissioning before you can pour a slab over them. Your contract includes a written allowance for this contingency, so the cost is never a surprise.
Because older Crowley homes hide wiring, framing, and waterproofing issues that a permit requires you to fix once walls are open. A builder who doesn’t write that allowance into the contract will send you a change order later. We inspect first, include a written allowance in the original price, and get your written approval before any surprise work is done.
Yes, we can match rooflines, siding profiles, window proportions, and paint colors to the main house, and we’ve done it on deep lots off Main Street with original farmhouses still standing. The bigger issue on those old homes is what’s behind the walls: cloth wiring, undersized joists, and failed waterproofing that the permit will force us to address. We price that work honestly up front and match the exterior so the new unit looks like it’s always been there.
Yes, a separate HVAC system is required, and in Crowley’s climate you’ll want a properly sized unit with good dehumidification, not a window unit. We specify ductless mini-split systems on most Crowley ADUs because they handle the humidity well and don’t require ductwork in a small footprint. The system is included in your written quote, sized to the ADU’s square footage and insulation level.
Written by Troy Eastman, Owner at Benson ADU Fort Worth, serving Crowley and the surrounding area.



