Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Fast, Reliable Home Additions & ADU Across Crowley
Adding square footage in Crowley usually means working around Blackland Prairie clay, not just hammering studs. A detached ADU in the 76036 ZIP runs $90,000 to $220,000, while a garage conversion lands between $30,000 and $80,000 depending on how much plumbing and foundation repair the existing slab needs. We’ve built and remodeled enough homes across Crowley to know which subdivisions sit on post-tension slabs with years of service left and which ones are already chewing through drywall at the corner beads. Call (877) 610-1318 and we’ll walk your lot before we ever put a number on paper.
Why Barrett & Sons Construction Is Crowley’s Preferred Home Additions & ADU Company
Tom Barrett has had his name on the truck since 1998, and his sons run the crews that show up in Crowley. That’s the difference between a contractor who quotes one price on the phone and one whose sons are standing in your driveway asking where you want the door swung for your Windows & Doors - Crowley installation. We pull permits on every eligible add-on and conversion, and the inspector signs off before we call it done. You can look up Tom’s license number yourself, then look up his home address if you want, because both are published. We’re not hiding behind a call center.
Crowley homeowners keep calling us back because the price we quote is the price on the final invoice. Every allowance, every scope change, every unexpected soil condition gets written up as a change order and handed to you before work continues. The permit inspector works for you, not for me, which is why we like him on the job. And if something isn’t done right, the 90-Day Done Right Promise means one call brings Tom back. No argument, no fine print.
Our Home Additions & ADU Services in Crowley
ADU Design & Permitting
Crowley’s building department wants engineered drawings for any detached unit, and the clay soil under most of 76036 means the foundation spec has to be right the first time. We handle the design, the stamped engineering, and the permit application as one package, so you’re not stuck playing messenger between a draftsman and the city. If you’re planning an ADU along the newer subdivisions off Crowley Road or down toward Sycamore Creek, we’ll check the lot’s grading history before we draw anything.

Garage Conversion ADU
Converting a two-car garage in Crowley usually costs $30,000 to $80,000, with the spread driven by whether you’re adding a bathroom, upgrading the slab, or just framing out living space. Most garages built in the 2000s tract boom have slabs that were poured for parked cars, not bedrooms, so we test for flatness and moisture before we commit. A garage conversion off FM 1187 or near the Bicentennial Park area is often the fastest way to add a rentable unit without disturbing the main house.

New Detached ADU
A brand-new detached ADU in Crowley runs $90,000 to $220,000. That’s a wide range because the foundation alone can shift the budget by tens of thousands depending on whether you’re on virgin clay or previously graded fill. We pour a foundation that accounts for North Texas drought-and-recharge cycles, not just the minimum code requirement. If you want a unit with a full kitchen and a Schluter-waterproofed bath, we’ll spec it honestly and show you the allowance sheet before we break ground.

Junior ADU & Interior Conversion
When a spare bedroom or a finished attic can become a kitchenette-and-bath unit, you add rentable square footage without touching the backyard. These projects in Crowley often hinge on whether your panel has room for a second range circuit and whether the existing bath framing is still square. We’ll tell you up front if an interior conversion makes more sense than a detached build, and we’ll put that recommendation in writing along with the price.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Crowley
We install materials you can look up, because we’re not interested in mystery brands off a van. On Crowley additions and ADUs you’ll see Schluter waterproofing in wet areas, Grohe fixtures where you want them, and the same GAF roofing products we put on full replacements and Crowley Roofing jobs across Tarrant County. We stock the common trim, flashing, and waterproofing parts our Crowley jobs need, so a missing fitting doesn’t stall your schedule for a week. If you want to compare brands before signing, ask and we’ll hand you the spec sheets.
Common Home Additions & ADU Problems We See in Crowley Homes
- Slab heave at the tie-in point. When new slab meets old slab on Blackland Prairie clay, the two move differently over time. We see corner pops and drywall cracks at the seam within a few years on additions where the builder skipped a proper expansion joint.
- Post-tension slab surprises. Cutting into a post-tension floor for plumbing or a new bathroom in a 2000s Crowley tract home can be dangerous if the tendons aren’t marked. We always locate and map them before any saw touches concrete.
- Undersized HVAC for the added square footage. A bedroom addition off the existing furnace often leaves the new room eight degrees warmer in August. We size the extension properly instead of tapping a unit that was already borderline.
- Grading that funnels water toward the new foundation. Flat lots on the southern edge of town, especially near Rendon Creek drainage, need positive slope re-cut after construction or the first big rain finds the new slab. We grade for the next thirty years, not the final walkthrough.
Pricing for Home Additions & ADU in Crowley, TX
Most home additions in Crowley run $45,000 to $130,000. A simple room addition on stable slab typically lands at the lower end; a second story or a large ADU with a full kitchen pushes toward the top. Garage conversions sit at $30,000 to $80,000, and a new detached ADU starts around $90,000 and can reach $220,000 when utilities, site prep, and premium finishes stack up. What moves your number in Crowley: soil testing results, whether the existing panel has capacity, how far utilities have to be trenched, and what the city requires for drainage. We give you a written line-item quote after we walk the property, and every change after that arrives as a written change order before it touches the job. Call (877) 610-1318 to schedule your free estimate.
We Also Serve Cities Near Crowley
Our crews work throughout southern Tarrant County, so if you’re in Burleson, Everman, Rendon, or Benbrook, you’re inside our regular service area. For the full picture on what we build, see our Home Additions & ADU service page or the Crowley city page for local specifics. We also handle Kitchen Remodeling in Crowley and Bathroom Remodeling in Crowley when your addition includes either one.
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 - Home Additions & ADU in Crowley
Most Crowley ADU projects start within two to four weeks of a signed contract, depending on how long the city takes to issue permits. The fastest path is a garage conversion, which often skips the foundation plan review entirely. Call (877) 610-1318 and we’ll give you a realistic start date after we see your lot.
Yes, we cover the entire 76036 ZIP, including the older streets near the high school, the subdivisions west of I-35W, and the newer builds along the southern edge of town. We schedule Crowley work from our Dallas-Fort Worth office, and the crews live close enough that a return visit doesn’t take a week.
If a wall is pulling away or a new slab is showing serious movement, call (877) 610-1318 and a live person answers 24/7. We’ll talk through what you’re seeing and, if it’s urgent, get someone out to Crowley right away. Foundation distress on clay soil doesn’t wait politely.
Crowley and its neighbors sit in the same cost band because material pricing and labor rates don’t change much across southern Tarrant County. Expect a home addition to run $45,000 to $130,000 whether you’re in Crowley, Burleson, or Rendon. The local variable is usually soil prep, which can swing a few thousand dollars on any given lot.
Every job carries our written 90-Day Done Right Promise, which says if it’s not done right, Tom comes back and makes it right with one call. We also honor manufacturer warranties on the products we install, and we register them in your name. Ask for the warranty language in writing before you sign and we’ll hand it to you.
If you’re ready to talk numbers, call (877) 610-1318. Tom or one of his sons will answer, and we’ll schedule a free estimate at your Crowley property. No pressure, no same-day signing, just real numbers from someone who will still be around when the inspection happens.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Crowley and southern Tarrant County since 1998.







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