3 contractors listed.
Air Sense Environmental is a licensed radon testing and mitigation company serving the St. Louis area, specializing in identifying and eliminating radon gas threats to improve home indoor air quality.
St. Louis homeowners face common crawl space and foundation challenges driven by local soil and climate conditions. Moisture control, encapsulation, and structural repair are among the most-requested services.
Crawl space encapsulation in the St. Louis area typically ranges from $5,000–$15,000 depending on square footage and moisture severity. Foundation repair costs vary widely based on the scope of work. Get multiple quotes from verified contractors.
St. Louis-area contractors typically serve surrounding communities within a 30–50 mile radius.
Radon mitigation typically costs $800-$2,500 for a standard sub-slab depressurization system. Costs vary based on home size, foundation type, and system complexity. Contact contractors in St. Louis for a specific quote.
The EPA recommends mitigation for radon levels at or above 4 pCi/L. Levels between 2-4 pCi/L should also be considered for mitigation. Any St. Louis home can have elevated radon regardless of age or construction type -- testing is the only way to know.
Most radon mitigation systems are installed in a single day (4-8 hours). Post-installation testing takes 2-7 days to confirm the system is reducing radon to safe levels. The entire process from testing to verified mitigation is typically 1-2 weeks.
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