AustinADU

ADU Rules & Activity in 78731

Analysis of Accessory Dwelling Unit potential in Austin ZIP Code 78731

2
Total ADUs Permitted
2
Built in Last 2 Years
35ft
Max Height Limit

Check Eligibility for a Property in 78731

Recent ADU Permits in 78731

1917 W 37TH ST BLDG 28/15/2025

Garage conversion into a ADU adding 2 upper level for accessory dwelling unit above garage. 1 bathroom.

3703 LAWTON AVE BLDG 27/28/2025

2 Story 2 Bath 1 Bed with Kitchen Garage Conversion to ADU.

Building a Backyard Home in 78731

ZIP code 78731 is seeing increasing interest in Accessory Dwelling Units (ADUs). Under the Austin HOME Initiative, any residential property in 78731 with a lot of at least 2,500 sqft can build:

  • Up to 3 residential units per lot
  • ADUs with no size limit (subject to 40% coverage)
  • Two-story units up to 35 feet tall

Use the search tool above to verify the specific zoning and lot size for any address in 78731.

Learn More About Austin ADUs