A home addition in San Antonio typically costs between $22,500 and $135,000, with most homeowners paying around $54,000. Local construction costs in San Antonio run below the national average, so prices here differ from the U.S. typical of $60,000.
Here's roughly how a typical $54,000 home addition in San Antonio breaks down by component:
| Component | Typical range |
|---|---|
| Foundation & framing | $11,900 – $15,100 |
| Roofing & exterior | $8,100 – $10,800 |
| Interior finish | $10,800 – $14,000 |
| MEP & permits | $8,100 – $11,900 |
The biggest factors are project size and scope, the materials and finishes you choose, structural or permit work, and your contractor's rates. Because labor and materials in San Antonio, TX are below the national average, the same project can cost noticeably more or less than in other metros.
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⚡ Check my quote freeMost home addition projects in San Antonio, TX run between $22,500 and $135,000, with a typical project around $54,000. Your final price depends on size, materials and the contractor.
Construction labor and materials in San Antonio are below the U.S. average, which is why local prices sit lower than the national typical of $60,000.
Compare each line item to the breakdown above, and get at least three itemized bids. You can also upload your quote to Bylder's free AI checker to instantly flag overpriced items.