Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterFast, Reliable Home Additions & ADU Across Fort Worth
A home addition or ADU in Fort Worth typically runs $45,000 to $130,000, and the real work starts long before the first nail: soil testing, permit sequencing, and historic-district review when your lot sits in Fairmount or Ryan Place. We’re Barrett & Sons Construction, and we’ve been pouring slabs, framing additions, and pulling permits across Fort Worth long enough to know which questions the city will ask before they ask them. Call (877) 610-1318 and Tom Barrett will talk you through what your specific lot needs.
Most homeowners we meet in Fort Worth aren’t shopping for the cheapest bid. They’re shopping for a contractor who will tell them the truth about Blackland Clay, Certificate of Appropriateness hearings, and county septic setbacks before the concrete truck shows up. That’s the conversation we’d rather have.
Why Barrett & Sons Construction Is Fort Worth’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews that work in Fort Worth neighborhoods every week. When you call, a live person answers. When you sign a contract, the 90-Day Done Right Promise is written on it, not buried in fine print. When the scope changes, you get a written change order before work proceeds. No surprises at the end, because the allowance that isn’t on paper is a surprise waiting for a date.
Fort Worth is a different construction market than Dallas or Arlington. The city’s Historic and Cultural Landmarks overlay covers several inner neighborhoods, including Fairmount and Ryan Place in 76110, and it imposes a design-review step that out-of-town general contractors frequently miss until they’re red-tagged mid-project. We don’t miss it. We sit through the Certificate of Appropriateness hearings and we time the permit sequencing so your framing inspection doesn’t stall while the design review catches up.
Our crews know the west-side ZIP codes: 76108 and 76109 with their postwar ranch homes and tight lot lines, 76110 with its craftsman bungalows on pier-and-beam, and 76111 with a mix of 1950s brick and newer infill. That knowledge shows up in the way we scope a job: where the clay will heave, which walls are load-bearing, what the city will want to see on the drawings.
Our Home Additions & ADU Services in Fort Worth
New Detached ADU
A standalone ADU on a Fort Worth lot starts with the soil. Blackland Clay shrinks and heaves several inches between drought and rain cycles, so a detached ADU needs either engineered piers or a properly pre-soaked and reinforced slab. On acreage outside the city core, Tarrant County rules apply instead of city permitting, and that changes the sequence: well and septic setbacks come first, then the structure. We scope both before quoting, so the price you see is the price you build to.
ADU Design & Permitting
For a Fort Worth ADU, the permit path is not one-size-fits-all. A detached ADU in the 76110 historic districts needs a Certificate of Appropriateness before permits are issued. A garage conversion in 76111 may trigger stormwater and parking reviews. We handle every step: design drawings, structural engineering, permit submittal, and the hearing if your property sits under the overlay. Our Home Additions & ADU team has shepherded dozens of these through Fort Worth’s review process without a single surprise invoice at the end.
Room Additions
A room addition in Fort Worth is a foundation project first. On inner-city properties where the original home rides on pier-and-beam, we level the existing beams and install a moisture barrier before tying in the new space. Skipping that step is how you get a two-inch separation crack at the seam within three years. On slab lots, we engineer the new slab for the clay’s movement, not just the dead load. That’s the difference between an addition that stays put and one that pulls away from the house.
Garage Conversion ADU
A detached garage conversion in Fort Worth typically runs $30,000 to $80,000, but the septic question can change everything. If your property is on septic, the county requires a bedroom count that matches the system’s rated capacity. Converting a garage into a one-bedroom ADU often means no septic upgrade. Adding two bedrooms can trigger a leach field expansion you didn’t plan for. We check that before we quote, not after you’ve signed.
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.
Trusted Brands We Service in Fort Worth
We carry premium materials with names you can look up. Quikrete and Oldcastle products show up on our Fort Worth slabs and footings because they hold up to Blackland Clay’s movement better than off-brand mixes. When a project calls for hardscape or paver work around a new ADU’s entry path, we use Techo-Bloc and Cambridge Pavers, not mystery pallets off a van. Parts and materials for Fort Worth jobs are staged locally, so your project doesn’t sit idle for a specialty order to ride in from out of state.
Common Home Additions & ADU Problems We See in Fort Worth Homes
- Slab heave on Blackland Clay: Contractors pour a slab-on-grade addition without pre-soaking the soil or calling for engineered piers. Then a dry summer followed by a wet fall heaves the slab two to three inches and tears the tie-in away from the existing house. We see this in Fort Worth’s western neighborhoods every single year.
- Red-tags from skipped historic review: An out-of-town GC starts a Fairmount ADU without a Certificate of Appropriateness. The city red-tags it, the owner waits six months for a hearing, and the rough-in sits exposed to weather that whole time. We pull the certificate before we pull permits.
- Septic and well setbacks missed on acreage: A crew drills the new ADU’s water line through a leach field because nobody checked the county’s setback requirements first. The final inspection fails and the fix costs thousands. We survey the lot and mark setbacks before the first trench opens.
- Underscoped pier-and-beam work: On 1920s bungalows in 76110, the original floor has settled half an inch or more over decades. An addition that ties into an unleveled beam transfers that sag into the new space. We level and add a moisture barrier before framing begins.
Pricing for Home Additions & ADU in Fort Worth, TX
A room addition in Fort Worth runs $45,000 to $130,000 depending on size, foundation type, and finish level. A detached ADU starts around $90,000 and can reach $220,000 for a two-bedroom with full kitchen and bath. Garage conversions land between $30,000 and $80,000. What moves the number in Fort Worth specifically? Historic-district review adds design and hearing time, Blackland Clay adds pier or slab engineering, and acreage lots add septic and well coordination. We write every allowance and every scope item into the contract, and any change arrives as a written change order before work proceeds.
| Project | Typical Fort Worth Range |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
Call (877) 610-1318 and Tom will walk your specific lot through the numbers. Estimates are free, and the quoted price won’t drift on you later.
We Also Serve Cities Near Fort Worth
Our Home Additions & ADU in Fort Worth crews run regular routes into River Oaks, Forest Hill, Haltom City, and Benbrook. Same owner, same sons on the site, same written change orders. If you’re in one of those towns, call (877) 610-1318 and we’ll schedule a walkthrough.
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 - Home Additions & ADU in Fort Worth
Yes, if your property sits inside the Historic and Cultural Landmarks overlay, which covers much of Fairmount and Ryan Place in 76110. You’ll need design review and a Certificate of Appropriateness before the city issues building permits for any exterior addition, ADU, or structural change visible from the street. We prepare the drawings, submit the application, and attend the hearing with you. Call (877) 610-1318 and we’ll check whether your address falls under the overlay.
Fort Worth’s Blackland Clay expands and contracts several inches between wet and dry periods, which means a standard slab-on-grade addition can heave and crack at the tie-in within a few years. The fix is either engineered piers drilled to stable depth or a slab designed with pre-soaked, moisture-conditioned subgrade and proper reinforcement. We decide which approach fits your lot after a soil test, not before. Call (877) 610-1318 and we’ll explain what your specific lot needs.
In most Fort Worth acreage and county-regulated cases, a one-bedroom garage conversion will not trigger a septic upgrade because the added bedroom count stays within the existing system’s rated capacity. Two or more bedrooms usually will. We verify your septic rating and the county’s current setback requirements before we quote the job. Call (877) 610-1318 and we’ll check your system’s paperwork.
A second-story addition on a 1920s or 1930s pier-and-beam bungalow in Fort Worth typically takes six to nine months from design approval to final inspection. The wildcards are historic-district review if the property sits in Fairmount or Ryan Place, plus the condition of the existing beams once we open the subfloor. We build a change order contingency into the scope for exactly that reason. Call (877) 610-1318 and Tom will lay out the sequence for your house.
Out-of-town contractors underbid Fort Worth additions because they don’t know the city. They don’t know about the Certificate of Appropriateness in Fairmount and Ryan Place, they don’t engineer for Blackland Clay heave, and they don’t check septic and well setbacks on acreage. Then the red tag or the inspection failure hits, and the change orders start. We scope every one of those items in writing before you sign. Call (877) 610-1318 for a free estimate that reflects what Fort Worth actually requires.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Fort Worth since 1998.