Accessory Dwelling Unit (ADU) Construction in San Antonio, TX — Costs $61,010 to $355,892
What does accessory dwelling unit (adu) construction cost in San Antonio? Average $152,525, ranging $61,010–$355,892. Labor runs $31.01/hr locally — 2% above the national average. Free breakdown with material + labor split.
San Antonio, TX Market
+2% vs nationalLabor Rate
$31.01/hr
Material Index
100
Avg Permit Cost
$806
Median Home Price
$259,330
As one of the largest metros in Texas, San Antonio has a competitive contractor market with hundreds of licensed professionals. This typically gives homeowners more leverage on pricing, though high demand for renovations can offset that advantage. Costs in San Antonio run slightly above the national average, though the gap is modest enough that smart material choices and timing can close it. The median home in San Antonio is valued at $259,330, putting this project at about 58.8% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$61,010
National: $60,000
Mid-Range
$152,525
National: $150,000
High End
$355,892
National: $350,000
Per Sq Ft
$254
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for San Antonio
Adjusted for San Antonio's labor rate ($31.01/hr) and material costs (index 100).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in San Antonio
$152,525
Based on 200 sq ft at mid quality, adjusted for San Antonio market rates.
Local Cost Breakdown
At San Antonio's average rate of $31.01/hr (3% above national avg)
Material cost index 100 (at national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in San Antonio
| Metric | San Antonio | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $152,525 | $150,000 |
| Median Home Price | $259,330 | $350,000 |
| Project as % of Home Value | 58.8% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $55,092 | $75,000 |
What Affects the Price in San Antonio
- 1Local labor rates ($31.01/hr in San Antonio)
- 2Material cost index (100 vs national 100)
- 3Attached vs detached
- 4Size and bedroom count
- 5Kitchen and bath quality
- 6Local ADU regulations
Popular Upgrades
- Full kitchen
- Separate entrance
- Solar panels for energy independence
Other Projects in San Antonio, TX
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Garage Addition
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Home Addition
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Inground Swimming Pool
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Attic Conversion
$56,018
Swimming Pool Construction
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Accessory Dwelling Unit (ADU) Construction in Other Texas Cities
Planning a Accessory Dwelling Unit (ADU) Construction in San Antonio
Building permits are typically required for a accessory dwelling unit (adu) construction in San Antonio. The average permit fee in this area is $806, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 6-18 months from start to finish.
A accessory dwelling unit (adu) construction is a complex project best left to licensed professionals. In San Antonio, skilled contractors charge an average of $31.01/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median San Antonio household earning $55,092/year, this project at $152,525 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Accessory Dwelling Unit (ADU) Construction — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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