ADU Regulations in Texas (TX)
Texas is rated Moderate for ADU construction with an ADU-friendliness score of 30/100 (Restrictive). Texas does not have a statewide ADU law — regulations are set entirely by local jurisdictions. Owner must reside on the property. Additional parking may be required. Texas has no statewide ADU law. Houston, as an unzoned city, allows ADUs with minimal restrictions. Austin significantly expanded ADU permissions in 2024 (HOME initiative). Dallas, San Antonio, and Fort Worth have varying local provisions. Texas legislators have proposed but not passed statewide ADU reform.
Full ADU Regulations Summary for Texas
| ADUs Allowed | Yes |
| Statewide ADU Law | No |
| Maximum ADU Size | Set locally |
| Owner Occupancy Required | Yes |
| Parking Required | Yes |
| Minimum Setback | Set locally |
| Permitting Timeline | Varies by jurisdiction |
| Impact Fees | Varies by jurisdiction |
| Long-Term Rental Allowed | Yes |
| Short-Term Rental (Airbnb) Allowed | Yes |
| Ease of Building | Moderate |
ADU Regulations by City in Texas
ADU rules can vary by city even within the same state. Without a statewide ADU law, Texas cities set their own rules, and policies can differ significantly. Below are ADU details for 5 cities in Texas.
Houston
As an unzoned city, Houston allows ADUs with minimal restrictions. Must meet building code and lot coverage requirements. No zoning-based barriers.
Austin
ADUs allowed on all residential lots since 2024 HOME initiative. Up to 1,100 sq ft. No owner-occupancy requirement. Austin is one of the most ADU-friendly cities in Texas.
Dallas
ADUs allowed in some residential zones with conditional approval. Dallas has been slowly expanding ADU permissions.
San Antonio
ADUs permitted in certain zones. San Antonio adopted ADU provisions in 2023. Owner occupancy required.
Fort Worth
ADUs allowed in some residential zones. More restrictive than Austin or Houston.
How Texas Compares to Other States
Below is a comparison of Texas with five states that have similar ADU-friendliness scores. This comparison helps illustrate where Texas stands nationally.
| State | Score | Statewide Law | Parking Req? | Owner Occ? | Ease |
|---|---|---|---|---|---|
| Texas (TX) | 30 | No | Yes | Yes | Moderate |
| Alabama (AL) | 30 | No | Yes | Yes | Difficult |
| Arkansas (AR) | 30 | No | Yes | Yes | Difficult |
| Delaware (DE) | 30 | No | Yes | Yes | Moderate |
| Georgia (GA) | 30 | No | Yes | Yes | Moderate |
| Idaho (ID) | 30 | No | Yes | Yes | Moderate |
Frequently Asked Questions About ADUs in Texas
Can I build an ADU in Texas?
Yes, ADUs are allowed in Texas. However, Texas does not have a statewide ADU law, so the specific rules depend on your city or county's zoning code. Some cities are more permissive than others. The ease of building is rated "Moderate" with a friendliness score of 30/100.
Do I need to live on the property to have an ADU in Texas?
Yes, Texas generally requires owner occupancy — the property owner must live either in the main house or the ADU. This means you cannot rent out both units simultaneously. Note: individual cities may have their own owner-occupancy rules, so check your local zoning.
How big can an ADU be in Texas?
Texas does not set a statewide maximum ADU size — this is determined by your local jurisdiction. Common local limits range from 600 to 1,200 square feet. Check your city's zoning code for the specific maximum.
Do I need extra parking for an ADU in Texas?
Texas may require additional off-street parking for ADUs. The specific number of spaces depends on your local jurisdiction. This can be a significant barrier if your lot has limited space for parking.
Can I rent out my ADU in Texas?
Yes, long-term rentals of ADUs are allowed in Texas. Short-term rentals (like Airbnb) are also generally permitted, though your city may have separate short-term rental regulations.
How long does it take to get an ADU permit in Texas?
The permitting timeline in Texas is: Varies by jurisdiction. Without a statewide mandate, permitting timelines depend entirely on your local jurisdiction's review process. Actual timelines can be affected by plan review backlogs, inspection scheduling, and the complexity of your project. Pre-approved ADU plans, where available, can significantly speed up the process.
Check ADU Rules for Your City
Use our ADU regulations lookup tool to find the specific rules for your city in Texas, or browse all 50 states to compare ADU regulations across the country. Remember that local rules may be more specific than state-level regulations.