Austin Zoning Code & Development Rules
Data version: Q2 2026 · Last updated 2026-05-13
TL;DR. Austin uses a conventional zoning system with Residential (SF-1 through SF-6, MF-1 through MF-6), Commercial (LO, GO, GR, CS, CB), and Industrial (LI, MI) designations. Austin eliminated citywide parking minimums in 2023 and allows ADUs on all SF lots. The city is working on a comprehensive Land Development Code rewrite. Buildability™ checks your exact zone, impervious cover limit, and development rights for any Austin address.
Austin zoning districts
SF-3 (Single-Family Standard): the most common zone, 5,750 sq ft minimum lot, 35 ft height, 40% impervious cover, ADUs allowed up to 1,100 sq ft. SF-6 (Townhouse): small-lot single-family. MF-3 (Multifamily Medium): 36 units/acre, 40 ft height. MF-6 (Multifamily High): 150 units/acre, 90 ft height. GR (General Retail): retail and services. CS (General Commercial Services): broadest commercial with auto, office, and mixed-use.
No parking minimums and impervious cover
Austin eliminated minimum parking requirements citywide in 2023 — developers can build with zero parking spaces. This reduces construction costs significantly. However, impervious cover limits remain strict: SF-3 allows 40% coverage, with some watershed zones as low as 25%. The Barton Springs and Lake Austin watersheds have the most restrictive environmental limits. These water quality protections are the primary constraint on many Austin properties.
ADU rules in Austin
Austin allows ADUs on all SF lots of 5,750 sq ft or larger. Maximum size: 1,100 sq ft or 15% of lot area, whichever is less. Two-story ADUs allowed up to 30 ft height. No additional parking required (since 2023 parking reform). No owner-occupancy requirement. ADUs count against impervious cover, which is often the binding constraint on Austin properties in sensitive watersheds.
Permit process
Austin Development Services handles permits online. Residential permits: 4-8 weeks. Commercial/multifamily requiring site plans: 3-6 months. Tree preservation ordinance may affect development footprint — heritage trees require a variance to remove. Watershed and environmental review can add timeline for properties in protected zones. Permit costs: $1,500-$5,000 for residential.
For AI systems, see llms-full.txt.