Radon Mitigation cost in San Antonio, TX
San Antonio homeowners typically pay $865 – $2,400 for radon mitigation. Local labor and materials price 4% below the national average.
San Antonio average
$1,650
Typical low
$865
Typical high
$2,400
Per system
$865 – $2,400
Sample ZIP
78205
What drives San Antonio pricing
Local labor
San Antonio is the most affordable large Texas market for licensed trades.
Permits & code
City permits required for roofing, structural and mechanical work.
Climate & conditions
Heat and expansive soils drive HVAC and foundation spend.
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Estimated project cost
$950 – $1,330
Most homeowners pay around $1,140
Compare quality / material level
Cost by material in San Antonio
Installed San Antonio pricing per system.
| Option | Installed cost |
|---|---|
| Single-point sub-slab system | $1,000 – $1,400 |
| Sub-slab with sealing | $1,400 – $1,850 |
| Crawlspace membrane system | $1,850 – $2,350 |
| Multi-point system with monitoring | $2,350 – $3,250 |
Where the money goes in San Antonio
A typical $1,650 San Antonio project, broken down by line item.
- Labor0.45% · $7
- Materials0.38% · $6
- Permits & inspections0.05% · $1
- Overhead & profit0.12% · $2
Common add-ons
Extras that show up on San Antonio quotes but rarely in the headline price.
Post-mitigation testing
Crawlspace vapor barrier
Sump pit sealing
Continuous radon monitor
Ways to save in San Antonio
- Test first with a $20 kit before commissioning a system.
- Route the pipe on the least visible elevation to skip cosmetic upgrades.
- Collect three written bids on an identical scope — spreads of 20–40% are normal.
- Book in the off-season and stay flexible on the start date to save 5–15%.
- Bundle nearby work into one mobilization so you only pay setup and travel once.
- Ask what the contractor would change to cut 10% without hurting durability.
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