Everything homeowners ask about building an ADU in Fort Worth — answered with 2026 data.
Yes, ADUs are allowed in Single-family residential in Fort Worth, TX. The maximum size for a detached ADU is 1,000 sq ft. Attached ADUs can be up to 750 sq ft. Fort Worth has an ADU-friendliness score of 6/10. Check our full Fort Worth ADU rules page for complete zoning details.
ADU construction in Fort Worth typically costs $120,000-$240,000. The cost per square foot averages $120-$240. Garage conversions are more affordable at $55,000-$135,000, while prefab ADUs cost $85,000-$195,000. Permit fees add $2,400-$4,000 to your budget. See our detailed Fort Worth ADU cost guide.
Detached ADUs in Fort Worth can be up to 1,000 sq ft. Attached ADUs are limited to 750 sq ft. Junior ADUs (JADUs) have a cap of Not allowed. Maximum height is 35 feet. You are allowed up to 1 ADU per lot on a qualifying lot.
Rear setback: 15 feet. Side setback: 5 feet. Front setback: 20 feet. Note that garage conversions may be exempt from setback requirements if the existing structure is already within the setback area.
1 space for ADU. Many cities and states have been relaxing ADU parking requirements in recent years. In California, no additional parking is required for ADUs near transit.
Not required. Note that owner-occupancy rules vary by state law — California and several other states have eliminated this requirement for standard ADUs.
The ADU permit review timeline in Fort Worth is typically 45-65 days. The plan check process takes approximately 2-3 weeks. Pre-approved plans availability: Limited program available.
Average ADU rental income in Fort Worth: 1-bedroom units rent for $1,100-$1,650/mo/month, 2-bedroom units for $1,400-$2,100/mo/month. Short-term rentals: Restricted in most areas. Expected ROI: 6-9% annual return.
The minimum lot size for an ADU in Fort Worth is 6,000 sq ft. This applies to detached ADUs — garage conversions and JADUs may have different or no lot size requirements.
Garage conversions are one of the most popular and affordable ADU options. In Fort Worth, a garage conversion typically costs $55,000-$135,000. The key advantages are lower cost (no foundation work), potential setback exemptions, and faster permitting. Read our complete garage conversion guide.