Legacy Inspection Services LLC
Verified Pro
3½+ years online5.0(173)
Radon Mitigation in Fresno, CA
Compare 28 radon mitigation contractors near you in Fresno and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated April 2, 2026
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Radon Mitigation in Fresno, CA
Fresno radon mitigation is sometimes needed in homes built on Central Valley alluvial soils — EPA Zone 2 (moderate potential) but high readings show up in 5-10% of homes tested. Slab-on-grade construction common here means sub-slab depressurization is the standard fix. NeedInstall connects you with Fresno radon mitigation pros who hold NRPP or NRSB certifications, follow Fresno Building permits, and design quiet exterior fan installations.
Fresno radon mitigation systems run $1,500-$3,500 for slab-on-grade, $2,500-$5,500 for crawlspace. CA requires a contractor's license. NRPP/NRSB certification recommended. Post-mitigation testing required to verify <4 pCi/L.
Frequently Asked Questions
- Test first?
- Yes — short-term tests ($20-$40) screen quickly.
- How does it work?
- Sub-slab depressurization.
- How loud?
- Modern fans quiet (40-50 dB).
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Fresno and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.