Garage Renovation Cost in San Antonio
Updated April 19, 2026
Garage renovation costs in San Antonio average $42–$85 per square foot at standard quality — about 15% below the US national average. A 400 sq ft San Antonio garage renovation runs $16,800–$34,000 mid-range. Two-car attached garages are standard in the vast majority of San Antonio's sprawling suburban neighborhoods. Garage conversions to casitas, guest suites, and multi-generational living spaces are especially popular — San Antonio's large extended-family households drive strong demand for private secondary living spaces on the same property. San Antonio is one of the most affordable major US cities for garage renovation projects.
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A garage renovation in San Antonio costs $42–$85 per square foot at standard quality. A 400 sq ft San Antonio garage renovation runs $16,800–$34,000 mid-range. Converting a San Antonio garage to a fully finished casita or in-law suite with bathroom, mini-split, and full finishes typically costs $35,000–$70,000 — among the most affordable garage conversion prices of any major US city.