Politics
Austin's 2026 HOME Phase 2 Initiative Reduces SF-3 Minimum Lot Sizes
The policy lowers the minimum lot size for SF-3 districts from 5,750 to 1,800 square feet, allowing up to three housing units on most such lots without rezoning under the Land Development Code.
How we reported this
The 2026 HOME Phase 2 initiative changes minimum lot sizes in Austin's SF-3 zoning districts. Under the update, the minimum lot size drops from 5,750 square feet to 1,800 square feet. This adjustment permits up to three housing units on most SF-3 lots without requiring rezoning.
Austin Land Development Code Framework
Austin's zoning and development rules operate under the Land Development Code, Title 25. The code sets permitted land uses, building heights, setbacks, density, and impervious cover limits. The city maintains 16 residential zoning districts, which include seven single-family districts labeled SF-1 through SF-7 and six multifamily districts. It also lists 13 commercial districts and four industrial districts.
Typical setbacks for single-family lots in SF-1 through SF-3 categories include a 25-foot front setback, which reduces to 15 feet in some cases. Interior side setbacks measure 5 feet, while street side setbacks range from 10 to 15 feet. Maximum building heights stand at 32 feet outside the 100-year floodplain and 35 feet inside it. Special overlays such as Historic Districts or Planned Unit Developments add further restrictions.
Effects on Local Residents
Residents in SF-3 districts may now consider additional housing units on qualifying lots that meet the new size threshold. Property owners can explore options for duplexes or triplexes where lot dimensions allow, subject to the existing setback and height rules in the Land Development Code. The changes apply directly to lots already zoned SF-3, removing the prior need for rezoning approval in many cases.
These adjustments affect daily decisions on property use for homeowners and renters in affected neighborhoods. Smaller lots that previously supported only one unit can now accommodate more under the updated minimum. Building plans must still comply with the code's limits on height and setbacks to maintain compliance during permitting.
The Land Development Code continues to govern all zoning decisions through its defined districts and standards. Residents reviewing property development options can reference the code's requirements on lot size, setbacks, and heights when planning projects in SF-3 areas.