Alsip, IL
4.9 (408 Google reviews)
TestingCommercialPost-Test
Free Estimates
Radon Mitigation Contractors in Illinois
Illinois has 54 contractors in this directory across 33 cities. Radon is a naturally occurring radioactive gas that can enter homes through foundation openings. EPA guidance sets 4.0 pCi/L as the action level for mitigation, and many homeowners choose to improve levels even below that threshold.
EPA Radon Zones in Illinois
Most of northern and central Illinois is Zone 1. The Chicago metro and surrounding suburbs are among the highest-risk areas.
State Regulations
Illinois requires radon mitigators to be licensed by the Illinois Emergency Management Agency (IEMA). All radon professionals must pass state examinations.
Illinois was one of the first states to establish mandatory licensing for radon professionals, reflecting the severity of its radon problem.
Radon FAQ for Illinois
Is radon bad in Chicago?
Yes. The Chicago metro area is solidly Zone 1. Cook, DuPage, Lake, and Will counties all have high average indoor radon levels.
Does Illinois require radon testing for home sales?
Illinois requires sellers to disclose known radon hazards. Testing is not mandated but is standard practice in Chicagoland real estate transactions.
Not sure what service you need?
Answer 5 quick questions and get matched with the right contractor.
Cities in Illinois
Chicago (10)Naperville (4)Bolingbrook (3)Morton Grove (3)New Lenox (3)Lisle (2)Oak Forest (2)Warrenville (2)Alsip (1)Barrington (1)Bourbonnais (1)Danville (1)Edwardsville (1)Franklin Park (1)Geneseo (1)Glen Carbon (1)Glendale Heights (1)Heyworth (1)Highland (1)Highland Park (1)Johnsburg (1)Joliet (1)Mokena (1)Mundelein (1)Northbrook (1)Oak Park (1)Orland Park (1)Oswego (1)Ottawa (1)Saint Charles (1)Tuscola (1)Volo (1)Wheaton (1)
Contractors
Full Service·Barrington, IL
MitigationTestingCommercialPost-Test
NRPP Certified RMP
Dedicated radon contractor in Barrington, Illinois, providing radon mitigation, radon testing, commercial radon services, post-mitigation verification testing. NRPP certified: NRPP Radon Measurement Professional. Brings 18 years of experience to the work.
Full Service·Bolingbrook, IL
MitigationTestingCrawlspaceNew ConstructionCommercial+2
NRPP Certified RMP
Full Service·Bolingbrook, IL
4.5 (39 Google reviews)
MitigationTestingCrawlspaceNew ConstructionCommercial+3
Full Service·Bolingbrook, IL
MitigationTestingCommercial
NRPP Certified RMS/RMP
A dedicated radon contractor serving Bolingbrook, Illinois, offering radon mitigation, radon testing, commercial radon services. NRPP certified: NRPP Radon Mitigation Specialist and NRPP Radon Measurement Professional. Handles basement foundations.
Bourbonnais, IL
TestingCommercial
NRPP Certified RMP
Chicago, IL
4.9 (205 Google reviews)
TestingNew ConstructionCommercial
Testing Specialist·Chicago, IL
5.0 (544 Google reviews)
TestingCommercial
Full Service·Chicago, IL
5.0 (822 Google reviews)
MitigationTestingCommercial
Testing Specialist·Chicago, IL
4.9 (154 Google reviews)
TestingCommercial
Chicago, IL
5.0 (691 Google reviews)
TestingNew ConstructionCommercial
Testing Specialist·Chicago, IL
4.9 (374 Google reviews)
TestingCrawlspaceNew ConstructionCommercial
Testing Specialist·Chicago, IL
5.0 (698 Google reviews)
Testing
Chicago, IL
Testing
NRPP Certified RMP
Full Service·Chicago, IL
5.0 (57 Google reviews)
MitigationTestingCrawlspaceCommercialVapor Barrier+1
5-Year WarrantyFree Estimates
A dedicated radon contractor serving Chicago, Illinois, offering radon mitigation, radon testing, crawlspace radon solutions, commercial radon services. Handles basement, crawlspace foundations, offers a 5-year warranty, and family-owned business.
Data provided by Google Maps