San Antonio, TX · Updated 2026

How Much Does Room Addition Cost in San Antonio, TX?

Average room addition costs in San Antonio range from $8,155 to $11,033. Get a free, customized estimate below.

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Room Addition Cost Breakdown — San Antonio, TX

ItemUnitQtyUnit PriceTotal
Foundationsq ft200$13.50$2700.00
Framingsq ft200$10.80$2160.00
Roofingsq ft220$7.20$1584.00
Electrical & Plumbinglump sum1$3150.00$3150.00
Estimated Total$9,594.00

* Prices are estimates based on San Antonio market rates. Actual costs may vary based on project specifics.

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Labor line 1

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Material line 1

Line total$2,700

Material line 2

Line total$2,160

Material line 3

Line total$1,584

Material line 4

Line total$3,150

Frequently Asked Questions — Room Addition in San Antonio

How much does room addition cost in San Antonio, TX?

The average cost for room addition in San Antonio, TX ranges from $8,155 to $11,033, depending on project scope, materials, and labor rates. San Antonio costs are close to the national average.

How do I get a free room addition estimate in San Antonio?

Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly.

What factors affect room addition costs in San Antonio?

Key factors include project size and complexity, material quality, labor rates in San Antonio (TX), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.