SEMS, Inc.
Verified Pro
27½+ years online5.0(1)
Radon Mitigation in Memphis, TN
Compare 47 radon mitigation contractors near you in Memphis and surrounding area with an average rating of 4.8/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 24, 2026
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Radon Mitigation in Memphis, TN
Radon mitigation work in Memphis is driven by the city's geology: limestone bedrock and clay-rich soils that trap radon gas in basements and crawlspaces. Shelby County has EPA Zone 2 designation (predicted average indoor levels 2-4 pCi/L), which means roughly 30-50% of homes tested exceed the 4 pCi/L action level. Typical jobs include sub-slab depressurization systems for full basements and crawlspace encapsulation with active ventilation for homes with dirt-floor crawlspaces. Midtown bungalows, East Memphis ranches, and Germantown newer homes all see demand. Hot, humid summers (80%+ humidity) drive demand for radon fans rated for high-moisture environments.
Residential radon mitigation in Memphis runs $900-$2,500 for sub-slab systems, $1,500-$4,000 for crawlspace installations. Tennessee doesn't require radon-specific licensing, but contractors should hold NRPP or NRSB certification. Memphis permits are required for electrical work tied to fan installation. Summer humidity means crawlspace systems should include moisture-rated fans and sealed encapsulation. Post-mitigation testing is standard — target <2 pCi/L for comfortable long-term levels. Fall and winter are peak demand seasons after back-to-school radon testing.
Frequently Asked Questions
- How much does radon mitigation cost in Memphis?
- A standard sub-slab depressurization for a full basement runs $900-$1,800. Crawlspace encapsulation with active venting runs $2,000-$4,000. Homes with both basement and crawlspace or complex layouts run $2,500-$5,000+. Most installations complete in one day.
- Should I test my Memphis home for radon before buying?
- Yes — Shelby County is in EPA Radon Zone 2 with roughly 30-50% of homes exceeding 4 pCi/L. A short-term test (2-7 days) runs $15-$30 DIY or $100-$200 professional. Negotiate mitigation into the purchase contract if results exceed 4 pCi/L.
- Can I install a radon system in my Midtown bungalow with a crawlspace?
- Yes — crawlspace mitigation uses vapor barrier encapsulation with an active fan to create negative pressure beneath the barrier. Typical cost $2,000-$4,000 including sealing, 6-mil vapor barrier, perimeter sealing, and a fan rated for high-humidity Memphis conditions. Post-install testing confirms <4 pCi/L levels.
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