AustinADU

ADU Rules & Activity in 78751

Analysis of Accessory Dwelling Unit potential in Austin ZIP Code 78751

4
Total ADUs Permitted
4
Built in Last 2 Years
35ft
Max Height Limit

Check Eligibility for a Property in 78751

Recent ADU Permits in 78751

4808 CASWELL AVE10/14/2025

Addition - Bathroom Addition to Existing Main House/BLDG 1 existing 3 bed/2.0 bath increasing to 3.0 bath(Secondary ADU/Bldg 2 which is 2 bed/2.5 bath is not included in scope of work - this note is for clarity only)

4808 CASWELL AVE10/7/2025

Addition - Bathroom Addition to Existing Main House/BLDG 1 existing 3 bed/2.0 bath increasing to 3.0 bath(Secondary ADU/Bldg 2 which is 2 bed/2.5 bath is not included in scope of work - this note is for clarity only)

4808 CASWELL AVE10/6/2025

Addition - Bathroom Addition to Existing Main House/BLDG 1 existing 3 bed/2.0 bath increasing to 3.0 bath(Secondary ADU/Bldg 2 which is 2 bed/2.5 bath is not included in scope of work - this note is for clarity only)

5112 BENNETT AVE10/2/2025

Addition/interior remodel of detached single-story garage to create two-story ADU

Building a Backyard Home in 78751

ZIP code 78751 is seeing increasing interest in Accessory Dwelling Units (ADUs). Under the Austin HOME Initiative, any residential property in 78751 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 78751.

Learn More About Austin ADUs