Fort Worth allows ADUs in single-family zones with moderate setback requirements. The city has been gradually liberalizing ADU regulations, making it increasingly accessible for homeowners seeking to add rental income.
Zoning & Size Requirements [1]
| Allowed Zones | Single-family residential |
| Max Size (Detached) | 1,000 sq ft |
| Max Size (Attached) | 750 sq ft |
| Max Size (JADU) | Not allowed |
| Max Height | 35 feet |
| Max Units | 1 ADU per lot |
Setback Requirements [1]
| Rear Setback | 15 feet |
| Side Setback | 5 feet |
| Front Setback | 20 feet |
| Parking Required | 1 space for ADU |
| Owner Occupancy | Not required |
| Min Lot Size | 6,000 sq ft |
Permit Process & Fees
| Approval Process | Building permit |
| Review Timeline | 45-65 days |
| Permit Fees | $2,400-$4,000 |
| Impact Fees | $1,000-$1,800 |
| Plan Check | 2-3 weeks |
| Pre-Approved Plans | Limited program available |
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Construction Costs [2][3]
| Average Build Cost | $120,000-$240,000 |
| Cost per Sq Ft | $120-$240 |
| Garage Conversion | $55,000-$135,000 |
| Prefab ADU (Installed) | $85,000-$195,000 |
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Rental Income Potential [4][5]
| Avg Rent (1 Bedroom) | $1,100-$1,650/mo |
| Avg Rent (2 Bedroom) | $1,400-$2,100/mo |
| Short-Term Rental | Restricted in most areas |
| Est. Annual ROI | 6-9% annual return |
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Recent Law Changes
What's Changed Recently
- Austin ADU ordinance expansion (2026): Larger units allowed on smaller lots
- Houston no-zoning ADU policy updated: Streamlined permitting for garage conversions
- San Antonio ADU pilot program results: 200+ permits issued, program made permanent
- Texas legislature considering statewide ADU preemption bill (HB 2345) for 2026
Tips for Building an ADU in Fort Worth
- Fort Worth's rental market is competitive; strong demand in walkable areas
- Many Fort Worth lots are larger than Dallas, giving more ADU placement options
- Tree preservation rules can impact placement; check early in design phase
- Consider the Dallas-Fort Worth market dynamics when pricing rental rates
Sources & References
All data on this page is sourced from official government records and verified market data. View our full methodology.
- Fort Worth Municipal Code § 5.301 — Accessory Uses Municipal Code — Accessed 2026-02-24
- HomeAdvisor — ADU Construction Cost Data Market Data — Accessed 2026-02-24
- Angi — Local ADU Contractor Costs Market Data — Accessed 2026-02-24
- Zillow Rental Manager — Market Rent Data Market Data — Accessed 2026-02-24
- HUD Fair Market Rents Government Data — Accessed 2026-02-24
- Texas Local Government Code — Land Use Regulations Government Data — Accessed 2026-02-24
Frequently Asked Questions
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