Solar Panel Rules in Austin, TX (2026)
Solar panel installation rules, mandate status, HOA restrictions, and permit process for Austin, TX.
Austin, TX has not confirmed its solar installation mandate status from an official source. Solar panels are a permitted use on residential and commercial properties subject to standard building permit requirements. Property owners in Austin must obtain a permit before installing solar panels. HOA restrictions on solar are limited by state law. Austin offers permit review for residential solar installations. Below you will find the current solar mandate status, HOA rules, permit process, and any historic district restrictions that apply to solar installations in Austin.
Solar Mandate Status
Solar Mandate Status in Austin: Whether a solar installation mandate applies in Austin has not been confirmed from an official source. Contact the the building department to verify current mandate requirements before beginning your solar installation project.
HOA Restrictions
HOA Restrictions on Solar in Austin: State law governs HOA authority to restrict solar installations. Contact the the planning department or your HOA directly for the most current information.
Permit Process
Permit Process in Austin: A building permit is required for all solar PV and solar thermal installations. Apply through the the building department. Phone: (512) 978-4000. Utility interconnection approval is typically required separately from the building permit.
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 Building Department — Solar Panel Permits. Last verified April 3, 2026. View source