Can you build a duplex in San Antonio, TX?

Allowed with site-plan review

The supplied district excerpt shows some mixed-use settings where upper levels may contain two-, four-, or eight-family units, and multifamily-related districts are referenced. But the package does not include the full citywide use table or approval triggers, so feasibility is only cautiously positive.

Confidence: low · Last researched May 2026

Dimensional standards in San Antonio, TX

R-3 — minimum front setbackten (10) feet
R-3 — maximum front setbackthirty-five (35) feet
R-3 — minimum side setbackfive (5) feet
R-3 — minimum rear setbackten (10) feet

Related questions

Are short-term rentals allowed in San Antonio, TX?

San Antonio has a dedicated STR permit process administered through Development Services. The city provides an STR permit page, an STR permit application, and an STR application/permits/enforcement FAQ in its documents portal.

What are the setback requirements in San Antonio, TX?

Setbacks vary by district. Examples — R-3: ten (10) feet; R-3: thirty-five (35) feet; R-3: five (5) feet; R-3: ten (10) feet. Always confirm the exact yard requirements for your district with San Antonio, TX.

What is the minimum lot size in San Antonio, TX?

Minimum lot size depends on the zoning district — R-3: three thousand (3,000) square feet; R-3: twenty (20) feet; R-3: seventy-five (75) feet.

Full investor analysis

The full San Antonio, TX report breaks down duplex and 2–4 unit feasibility by district, the approval path, and the density/dimensional limits that decide whether the numbers work. First town report is free.

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More about San Antonio, TX zoning

View the full San Antonio, TX zoning report →

This summary is AI-generated from public municipal sources and is not legal, engineering, or land-use advice. Always verify zoning with San Antonio, TX officials before making decisions.

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