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ADU construction in Fort Worth typically runs between $90,000 and $220,000, with most detached one-bedroom units landing in the $120,000 to $160,000 range. That number includes design, permits, site work, utility rough-in, and finish materials. A garage conversion ADU runs lower, usually $30,000 to $80,000, while a two-story detached unit with premium finishes can push past $220,000.
This guide breaks down exactly where that money goes, what drives the price up or down in Tarrant County specifically, and how Bradford Remodeling’s written-price process keeps your number from moving once the work starts. If you’re planning an ADU in Fort Worth, you’ll leave this page knowing your real budget, not a guess.
Key Takeaways:
- Detached ADUs in Fort Worth: $90,000 – $220,000 all-in, most falling between $120,000 and $160,000
- Garage conversions: $30,000 – $80,000, the cheapest path to a rentable unit
- Cost per square foot: $180 – $350 depending on foundation type, utility distance, and finish level
- Fort Worth permit fees, utility connection charges, and Tarrant County impact fees add $5,000 – $15,000 before materials enter the picture
- Every Bradford Remodeling ADU gets a written price before work starts and a 365-day written guarantee after it’s done
ADU Construction Cost Breakdown (2026)
Here’s what a typical detached ADU costs in the Fort Worth market, line by line. These are real numbers from real projects in neighborhoods like Arlington Heights, Ridglea Hills, Wedgwood, and the Near Southside, where Bradford crews work regularly.
| Line Item | Typical Range (Fort Worth, 2026) | What It Covers |
|---|---|---|
| Design & Architecture | $4,000 – $12,000 | Site survey, floor plans, structural drawings, foundation design, city submittal package |
| Permits & City Fees | $3,500 – $9,000 | City of Fort Worth building permit, plan review, inspections, Tarrant County impact fees |
| Site Work & Foundation | $12,000 – $28,000 | Clearing, grading, excavation, slab-on-grade foundation (pier-and-beam runs higher) |
| Framing & Structure | $18,000 – $40,000 | Lumber, trusses, sheathing, roof framing, labor |
| Rough-In: Plumbing & Electrical | $10,000 – $22,000 | Water line from main, sewer tie-in, new electrical sub-panel, wiring, fixture stub-outs |
| Rough-In: HVAC | $5,000 – $12,000 | Mini-split system or tie-in to existing, ductwork, ventilation per code |
| Insulation & Drywall | $6,000 – $14,000 | Batt or spray foam, drywall hang and finish, texture |
| Flooring | $3,000 – $9,000 | LVP, tile, or engineered hardwood including underlayment |
| Kitchenette | $8,000 – $25,000 | Base cabinets, countertop, sink, faucet, refrigerator cutout, range or cooktop |
| Bathroom | $9,000 – $28,000 | Full bathroom: shower, toilet, vanity, tile, fixtures |
| Doors, Windows & Trim | $5,000 – $14,000 | Exterior door, windows per code, baseboards, casing, interior doors |
| Exterior Finish & Roofing | $10,000 – $25,000 | Siding or brick veneer, roof system, gutters, exterior paint |
| Finishes & Fixtures | $4,000 – $12,000 | Lighting, plumbing fixtures, hardware, bath accessories |
| General Contractor Overhead & Margin | 12 – 20% of total | Project management, scheduling, site supervision, warranty administration |
Add the overhead and margin, and you land squarely in the $90,000 – $220,000 range. The spread is wide for a reason: a 400-square-foot unit with basic finishes and an easy utility connection sits at the low end, while a 900-square-foot two-bedroom with a full kitchen, upgraded fixtures, and a long sewer run sits at the high end.
What Drives the Price Up
- Pier-and-beam foundation: Older Fort Worth neighborhoods like Fairmount and Mistletoe Heights have soils that sometimes require pier-and-beam instead of slab, adding $8,000 – $15,000.
- Utility distance: If your sewer tap is 80 feet from the ADU site and the water main is across the yard, trenching and pipe runs add $4,000 – $10,000.
- Premium finishes: Cambria or Caesarstone counters instead of laminate, Kohler fixtures instead of builder grade, tile shower instead of a fiberglass pan. Each choice stacks $2,000 – $8,000 onto the total.
- Two-story design: A second floor adds structural steel, stairs, and engineering, typically bumping the project $30,000 – $60,000 above a single-story footprint.
What Keeps the Price Down
- Garage conversion: The shell, roof, and foundation already exist. You’re paying for insulation, drywall, utilities, and finishes, not structure.
- Simple roof lines: A single gable with standard trusses costs far less than a shed roof with custom framing.
- Kitchenette instead of full kitchen: A sink, small fridge, and microwave nook costs $8,000 – $15,000. A full kitchen with range and vent hood pushes $20,000 – $25,000.
- Back-to-back plumbing: Placing the bathroom and kitchenette on the same wet wall saves $3,000 – $7,000 in pipe and labor.
What Affects ADU Construction Pricing in Fort Worth
Fort Worth has its own price character. Here’s what moves the number in this market specifically.
- Soil and foundation conditions. Large stretches of Fort Worth sit on expansive clay soil that shifts with moisture. Depending on your lot, the city or your engineer may require a post-tension slab or additional steel, adding $3,000 – $8,000 over a standard slab. In older neighborhoods like Ryan Place or Berkeley Place, pier-and-beam is common and costs more.
- City of Fort Worth ADU regulations. The city caps ADU square footage at a percentage of the primary home and requires the unit to match the primary home’s roofline and exterior materials in many zoning districts. That design-matching requirement can force masonry veneer or specific window styles, adding $5,000 – $12,000 versus what you’d spend on plain siding.
- Utility tap fees. Fort Worth Water charges connection fees for new water and sewer service lines. A new sewer tap in Tarrant County can run $3,000 – $6,000 by itself, before a single foot of pipe is laid. Electrical service upgrades, if your main panel is undersized, add another $2,000 – $5,000.
- Alley access vs. driveway access. Many Fort Worth lots, especially in the Fairmount and South Hemphill areas, are served by alleys. If the ADU requires new driveway access from the alley or a widened curb cut from the street, site work and concrete add $4,000 – $10,000.
- Detached vs. attached. A fully detached ADU needs its own foundation, exterior walls, roof, and utility runs. An attached unit shares one wall and can tie into existing structure, saving $15,000 – $35,000. But Fort Worth zoning only allows attached ADUs in certain districts, so your lot location decides this for you.
- Finish level and brand selection. Bradford Remodeling installs documented brands like KraftMaid and Wellborn cabinetry, Kohler and Moen fixtures, and Cambria or Caesarstone surfaces. These are traceable products with manufacturer warranties, but they cost more than off-brand stock. Going with spec-grade finishes elsewhere might save $8,000 – $15,000, but the materials have no real warranty behind them.
How to Save on ADU Construction in Fort Worth
You don’t save by cutting corners that bite you later. You save by making scope decisions early and keeping the design tight. Here’s what actually works.
- Lock the scope before you start. Change orders are where ADU budgets bleed. A written scope with a fixed price, before the first tool comes out, is the single biggest money saver. Bradford’s no-hassle upfront pricing means the number you sign is the number you pay. No re-pricing at the door, no discovered line items mid-project.
- Choose a garage conversion if the structure qualifies. The $30,000 – $80,000 range beats $90,000 – $220,000 any day. Your garage already has a foundation and roof. The work is insulation, drywall, utilities, and finishes.
- Keep the plan compact. A 400-square-foot studio with a kitchenette and full bath rents in Fort Worth. Every 100 square feet you add costs roughly $18,000 – $35,000. The sweet spot for most homeowners is 400 to 600 square feet.
- Use a single wet wall. Put the bathroom and kitchenette back to back. You’ll save $3,000 – $7,000 on plumbing rough-in.
- Phase the finishes. Build the unit with builder-grade finishes now, upgrade the counters and fixtures later. A Cambria countertop now costs the same as a Cambria countertop in three years, but it doesn’t add interest to your loan.
- Get a written estimate first. Bradford Remodeling gives free estimates on ADU construction in Fort Worth. Call (682) 204-4897 and a real person answers, 24/7. No voicemail tree, no callback queue.
ADU Construction vs. Garage Conversion: Fort Worth Price Comparison
Homeowners often ask whether to convert the garage or build a detached unit. The answer usually comes down to zoning and budget. Here’s the straight comparison for Fort Worth:
| Factor | Garage Conversion | Detached New Build |
|---|---|---|
| Total Cost | $30,000 – $80,000 | $90,000 – $220,000 |
| Cost per Square Foot | $75 – $160 | $180 – $350 |
| Timeline | 8 – 14 weeks | 16 – 32 weeks |
| Foundation Needed | No (existing slab) | Yes |
| Utility Runs | Shorter (existing walls) | Longer (across yard) |
| Zoning Restrictions | Allowed in most residential districts | Must meet setback and lot-coverage rules |
Garage conversions win on price. Detached ADUs win on privacy and rentability. If you’re unsure which path your lot allows, our Fort Worth ADU construction page walks through zoning, setbacks, and what the city will approve. And if you want a straight answer about your specific lot, call (682) 204-4897. The estimate is free and the number is written before any work starts.
What the Fort Worth Permit Process Adds to Your ADU Budget
Fort Worth’s permitting process adds both time and money. Here’s what to expect in 2026.
- Building permit: $1,500 – $4,000 depending on square footage. The city calculates this on valuation, so a $150,000 ADU pays more than a $90,000 unit.
- Plan review fee: $500 – $1,500. The city checks your drawings for code compliance, structural integrity, and zoning conformance.
- Tarrant County impact fees: $1,000 – $3,500. Water and sewer capacity charges for new residential units.
- Water and sewer tap fees: $3,000 – $6,000 combined. Fort Worth Water charges separate connection fees for each new service line.
- Electrical permit: $300 – $800. Covers the rough-in and final inspection for your new sub-panel and circuits.
- Mechanical permit: $200 – $600. Covers the HVAC installation.
- Plumbing permit: $300 – $800. Covers water, drain, and vent work.
- Inspections (multiple): $500 – $1,200 total. Expect foundation, framing, rough-in, insulation, and final inspections.
All told, plan on $7,000 – $17,000 in permits, fees, and utility connections before materials arrive on site. Bradford Remodeling includes every one of these costs in the written estimate. If the city adds a fee mid-project, you don’t pay for it; if the city charges less than estimated, the difference comes off your invoice. That’s The Garrison Standard: the price in writing is the price you pay.
Why Bradford Remodeling Prices ADUs Differently in Fort Worth
Most contractors give you a number over the phone and then adjust it when they see your lot. Bradford Remodeling works the other way. Curtis Lane, who leads the Fort Worth operation, puts every scope in writing before a single tool comes out. The written price includes permits, materials, labor, site work, and the warranty. Nothing moves at the door.
That discipline comes from the Garrison Partners framework, established in 2004. Bradford Remodeling is part of that family, independently owned and operated, and every project is held to The Garrison Standard: a written price before work begins, background-checked and uniformed technicians on site, and a live person answering the phone 24 hours a day, seven days a week. No voicemail. No callback queue. You call, a person picks up.
After the work is done, the 365-Day Done Right Promise takes over. Every completed project carries a full-year written guarantee. If anything fails inside that year, whether it’s a leaking shower pan or a settling door frame, Bradford returns and corrects it at no charge. That guarantee is in writing, signed, and in your hand at close. The site is clean, the scope is documented, and the papers are squared away. That’s what disciplined looks like.
What Finishes Cost in a Fort Worth ADU
Materials decide whether your ADU lands at $90,000 or $220,000. Here’s what Bradford quotes for common finish packages, using the documented brands we install.
- Kitchenette cabinets: $2,500 – $8,000. KraftMaid or Wellborn stock cabinets run the lower end; custom configurations and soft-close hardware push toward $8,000.
- Countertops: $2,000 – $6,500. Laminate starts around $2,000. Cambria or Caesarstone quartz for a kitchenette counter and bathroom vanity runs $4,500 – $6,500 in an ADU footprint.
- Bathroom vanity: $800 – $3,000. A 30-inch stock vanity with a cultured marble top sits at the low end. A 48-inch Wellborn vanity with a quartz top reaches $3,000.
- Shower system: $4,500 – $12,000 for a walk-in shower with tile surround and Kohler or Moen fixtures. A fiberglass pan and stock surround drops to $3,000 – $8,500.
- Flooring: $3,000 – $9,000. LVP through a 500-square-foot unit runs $3,500 – $5,500. Tile in the bathroom and LVP elsewhere pushes $6,000 – $9,000.
- Windows and exterior door: $2,500 – $7,000. Code-compliant egress windows, a Therma-Tru entry door, and proper flashing.
Every finish choice is documented in the written estimate. You’ll see the brand, the model, and the line-item price before you sign. No allowances that get “adjusted” later. No vague “premium finishes” language that lets the number drift.
FAQs: ADU Construction Cost in Fort Worth
How much does an ADU cost in Fort Worth per square foot?
ADU construction in Fort Worth runs $180 to $350 per square foot all-in. A 500-square-foot unit at $250 per square foot totals about $125,000. Smaller units cost more per square foot because fixed costs like permits, utility taps, and design fees spread across fewer square feet. Call (682) 204-4897 and we’ll give you a written per-square-foot number for your specific lot.
Is it cheaper to build an ADU or convert a garage in Fort Worth?
A garage conversion runs $30,000 – $80,000, while a detached ADU runs $90,000 – $220,000. The garage conversion is cheaper because the foundation, walls, and roof already exist. But not every Fort Worth garage qualifies: the city requires minimum ceiling heights, proper slab condition, and specific insulation retrofits. Bradford inspects the structure and tells you straight whether a conversion makes sense before you spend a dollar on plans.
How long does ADU construction take in Fort Worth?
A detached ADU typically takes 16 to 32 weeks from permit submittal to final inspection. City of Fort Worth plan review adds 4 to 8 weeks before construction starts. A garage conversion runs 8 to 14 weeks. Bradford schedules every trade in sequence and keeps the site clean daily, so the timeline holds. The written estimate includes the schedule, and the schedule includes the permit wait.
Can you build an ADU in Fort Worth for under $100,000?
Yes, but narrowly. A small attached studio under 400 square feet with a kitchenette and builder-grade finishes can land around $90,000 if your utilities are close and your foundation is simple. Once you add a full kitchen, a second bedroom, or any premium finish, you’re over $120,000. Bradford gives free estimates, so you’ll know your exact number before you commit. Call (682) 204-4897 for a written quote.
Do Fort Worth ADUs add resale value?
ADUs in Fort Worth typically add 60 to 80 percent of construction cost to resale value, depending on the neighborhood, the unit’s finish level, and whether the buyer can legally rent it. A $150,000 ADU generally adds $90,000 to $120,000 in appraised value. The rentability question matters: Fort Worth allows ADUs as rental units in most single-family districts, which boosts the value calculation. A real estate agent can give you a precise number for your street.
What is the most expensive part of building an ADU?
Framing and structure typically cost $18,000 – $40,000, making it the single largest line item on a detached ADU. Foundation and site work come second at $12,000 – $28,000. Plumbing and electrical rough-in land third at $10,000 – $22,000. Bradford itemizes every one of these costs in the written estimate, so you see exactly where each dollar goes before the project starts.
Get a Written ADU Price for Your Fort Worth Property
You’ve read the numbers. Now get yours. Bradford Remodeling gives free ADU estimates in Fort Worth with a written price before any work starts. No numbers that move at the door. No allowances that grow. No surprises.
Call (682) 204-4897 and a live person answers, 24/7. Curtis Lane and the Bradford crew will walk your lot, check your zoning, measure your utility runs, and hand you a written scope with a fixed price. If the work doesn’t hold up inside the first year, the 365-Day Done Right Promise brings us back at no charge. That’s the deal, in writing, every time.
Pricing reflects the Fort Worth market as of 2026. Bradford Remodeling Co Fort Worth offers free estimates – call (682) 204-4897.
Written by Curtis Lane, Owner at Bradford Remodeling Co Fort Worth, serving Fort Worth and Tarrant County since 2004.
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