Can I Build Garage in Austin, TX? (2026)
Find out if you can build a garage in Austin, TX. Rules, permit requirements, costs, and next steps.
Building a detached garage in Austin, TX requires a building permit. Setback requirements and lot coverage limits apply.
Building a detached or attached garage in Austin, TX typically requires a building permit through the local building department. Garages are governed by the same structural permit requirements as room additions, plus setback requirements that vary by zone. Detached garages must comply with accessory structure setbacks in Austin, and total lot coverage (all covered structures combined) must not exceed zone limits.
Garage Rules in Austin
Garage Construction Rules in Austin: Permit required: Conditional depending on size. SF-1 zone setbacks (typical): Front varies ft, Side varies ft, Rear varies ft. Check your zone's lot coverage limits — adding a garage may push total coverage over the maximum.
Costs & Fees
Contact the local building department at (512) 978-4000 for current permit fee information.
Next Steps
Next steps for building a garage in Austin: 1. Verify your zone setback requirements and lot coverage limits. 2. Prepare site plan showing garage location relative to property lines. 3. Submit a building permit application to the local building department. 4. Once approved, begin construction with required inspections at foundation, framing, and final.
Austin Development Services Department (DSD)
Phone: (512) 978-4000 · Verified July 6, 2026 · Source
Website: https://www.austintexas.gov/development-services
Online Permits: https://abc.austintexas.gov/
Frequently Asked Questions
Can I build an ADU on my Austin property?
Yes. Austin allows secondary apartments (ADUs) on most residential lots. The unit can be up to 1,100 sqft or 0.15 FAR of lot area. No owner-occupancy requirement. With Austin's HOME Ordinance (2023), you can have up to 3 total units on most SF-zoned lots. Impervious cover limits and tree protection requirements may constrain placement.
What is the HOME Ordinance and how does it affect my property?
Austin's HOME (Home Options for Middle-Income Empowerment) Ordinance, passed in 2023 (Phase 1) and expanded in 2024 (Phase 2), allows up to 3 residential units on any single-family zoned lot in Austin. This means you can have a main house, an ADU, and a third unit — or a duplex plus a secondary apartment. Minimum lot size requirements were reduced and in some cases eliminated. This is one of the most significant zoning reforms in Austin's history.
Do I need a permit to remove a tree in Austin?
It depends on size. Trees with trunk diameters of 8 inches or more at 4.5 feet height (DBH) are 'Protected Trees' requiring an Austin permit to remove. Trees 19 inches or larger are 'Heritage Trees' — these cannot be removed except in cases of imminent public hazard (with variance approval). Austin's tree ordinance is one of the strictest in Texas and violations can result in significant fines.
Are short-term rentals (Airbnb) allowed in Austin?
Yes, with a license ($613/year). Austin has two STR types: Type 1 (owner-occupied) allows whole-unit rental without the owner present; Type 2 (non-owner-occupied) is limited to 3% of residential units per City Council district and banned in some areas. Austin collects a 9% Hotel Occupancy Tax (HOT) on STR rentals. Noise ordinance and maximum occupancy rules apply.
What are the impervious cover limits in Austin?
Impervious cover limits in Austin depend on your watershed zone and zoning district. Most SF zones allow 45% impervious cover on lots not in critical watershed areas. However, if your property is in the Barton Springs zone or other sensitive watersheds, limits drop to 25-40%. Impervious cover includes your house, garage, driveway, patio, pool, and any other hard surface. Austin Watershed Protection calculates this for each permit application.
Source: Austin Development Services Department (DSD) — Building Regulations. Last verified April 3, 2026. View source