LOT SIZE.
Austin City Code § 25-4-174
in effect§ 25-4-174 - LOT SIZE.
(A) In the zoning jurisdiction, the site development regulations for the zoning district in which a lot is located determine minimum lot area and minimum lot width.
(B) In the extraterritorial jurisdiction, residential lot requirements are as follows:
(1) minimum lot area is:
(a) in a subdivision served by a public wastewater system or central wastewater disposal unit:
(i) 5,750 square feet; or
(ii) 6,900 square feet for a corner lot; or
(b) in a subdivision with private on-site sewage facilities, as determined by Texas Administrative Code Title 30, Chapter 285 (On-Site Sewage Facilities);
(2) minimum lot width is:
(a) 50 feet for an interior lot;
(b) 60 feet for a corner lot; or
(c) 33 feet for a lot on a cul-de-sac or curved street; and
(3) minimum lot frontage, including a flag lot, is:
(a) 20 feet; or
(b) if a culvert is required for a driveway approach, 30 feet.
(C) The director may reduce the minimum lot frontage prescribed by Subsection (B) if the director determines that access to the lot is restricted to a joint use driveway.
Source: Section 13-2-433; Ord. 990225-70; Ord. 030306-48A; Ord. 031211-11.
Source: City of Austin, City Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/tx/austin/codes/code_of_ordinances?nodeId=TIT25LADE_CH25-4SU_ART3PLRE_DIV3LO_S25-4-174LOSIFetched: 10/27/2026