Austin Setbacks & Height Limits — Residential Zones

Fact-checked against current City of Austin HOME and Land Development Code materials on September 20, 2026.

Austin residential development cannot be reduced to one setback-and-height table. The applicable standards depend on the base zoning district, the residential use, whether Subchapter F applies, the HOME amendments, and any neighborhood plan or overlay.

Base SF-1, SF-2, and SF-3 Standards

The base zoning standards commonly associated with SF-1, SF-2, and SF-3 include:

Those are base zoning values. They are not a complete statement of what can be built under current Austin rules.

The 35-ft Base Height Is Not Universal

The previous version presented 35 ft too broadly as the operative height for SF-1, SF-2, and SF-3 residential construction.

The City's current HOME guidance states that allowed height is subject to the base zoning limits in §25-2-492, but Subchapter F's 32-ft height restriction still applies to single-family residential use where Subchapter F governs.

A parcel can therefore have a 35-ft base-zoning height while a single-family project on that parcel remains subject to the 32-ft Subchapter F restriction.

HOME Phase 1

Austin's HOME Phase 1 allows up to three housing units on qualifying SF-1, SF-2, and SF-3 property through the duplex, two-unit residential, and three-unit residential use regulations.

The City's current guidance distinguishes those uses from single-family residential use. Do not apply one set of HOME dimensions to every project simply because the parcel is zoned SF-1, SF-2, or SF-3.

For duplex, two-unit residential, and three-unit residential uses, current HOME guidance also lists:

• maximum building coverage of 40%;
• maximum impervious cover of 45%.

Current §25-2-773 and related provisions should be checked for the project's exact setbacks and use configuration.

HOME Phase 2 Small Lots

HOME Phase 2 created a small-lot single-family residential path. The City describes qualifying small lots as at least 1,800 sq ft and less than 5,750 sq ft, subject to the adopted standards.

That does not mean every existing SF property can simply be treated as a 1,800-sq-ft lot. Subdivision, utility, access, drainage, tree, environmental, and other requirements still apply.

Subchapter F and Other Overlays

Subchapter F can regulate mass, height, and floor area for applicable single-family residential projects. Neighborhood Conservation Combining Districts, waterfront and environmental regulations, Capitol View Corridors, airport-related rules, and other overlays can further change the result.

Because Austin's HOME rules have been amended and interpreted through multiple phases, use the City's current HOME page and current code rather than relying on older “McMansion” summaries.

How to Check a Property

1. Confirm the complete base zoning and overlays.
2. Identify the proposed residential use: single-family, duplex, two-unit, three-unit, or small-lot single-family.
3. Read the applicable base standards in §25-2-492.
4. Determine whether Subchapter F applies.
5. Apply the current HOME provisions for the selected use.
6. Check impervious cover, building coverage, environmental, tree, drainage, access, and neighborhood-plan requirements.
7. Confirm uncertain interpretations with Austin Development Services before relying on a design dimension.

Official Sources

• City of Austin — HOME Amendments
• City of Austin — Land Development Code
• Austin Code of Ordinances

This guide is informational only. Current code, mapped overlays, and the specific residential use control. Verify current requirements before design, permitting, purchase, subdivision, or construction decisions.