Tokori Incorporated
Verified Pro
14+ years online5.0(52)
Radon Mitigation in Dover, DE
Compare 30 radon mitigation contractors near you in Dover and surrounding area with an average rating of 4.9/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
Most pros respond within 2–24 hours
Verified Pro Installers
Other Businesses in This Area
Delaware Authority on Radiation Protection
15½+ years onlineFull Armor Services
Radon Specialists
~12 years onlineAnvil Radon
5.0Atlantic Radon
5.0~7 years onlineAtlantic Radon Systems Inc
5.018½+ years onlineBiosphere Remediation, LLC
5.0Core24 Services: Water Damage & Mold Restoration - DE
5.0Frontline Inspections
5.0Reliable Home Inspection Service
5.0~19 years onlineReliable Home Inspection Services
5.0Silver Lake Restoration
5.0The Radon Bros
5.02 years onlinePro-spect Inspection Services DE
4.93½+ years onlineRadon Mitigation of Maryland
4.98½+ years onlineLawson Home Services
4.88½+ years onlineSWAT Radon Mitigation
4.812+ years onlineRSG Dryer Vent & Air Duct Cleaning And Chimney Repair Services Of DE
4.2Radon Mitigation in Nearby DE Cities
Other Services in Dover
Access Control & Intercom(42)Alarm System Installation(21)Appliance Installation(23)Artificial Turf Installation(30)Automotive Installs(6)Concrete & Paving(29)Deck & Patio Building(31)Electrical Services(27)EV Charger Installation(7)Fencing & Gate Installation(25)Fire Protection & Sprinklers(30)Garage Door Installation(20)
About Radon Mitigation in Dover
Radon mitigation reduces radon gas levels in buildings, typically through sub-slab depressurization — a system that creates suction beneath the foundation to draw radon gas out before it enters living spaces. Radon is the second leading cause of lung cancer after smoking.
Typical costs: A standard sub-slab depressurization system runs $800–$2,500 installed. More complex situations (crawl spaces, multiple suction points) can be $2,000–$4,000. Radon testing before and after is typically included.
Common projects include:
- Sub-slab depressurization system
- Crawl space radon mitigation
- Radon testing and monitoring
- Sump pit sealing and venting
- New construction radon-resistant design
Many states require radon mitigation contractors to be specifically certified. Permits may be required for the system installation depending on jurisdiction.
Frequently Asked Questions
- How much does radon mitigation cost in Dover?
- Most homes can be mitigated for $800–$2,500 with a sub-slab depressurization system. This includes the fan, PVC piping, sealing, and post-mitigation testing. The system runs continuously and costs about $50–$100/year in electricity. More complex jobs (crawl spaces, multiple foundation types) run $2,000–$4,000.
- How do I find a reliable radon mitigation contractor in Dover?
- Use a certified radon mitigator (NRPP or state-certified). They should test before and after installation and guarantee results below 4 pCi/L (the EPA action level). Ask about fan warranty and what happens if the system doesn't achieve target levels.
- Do I need a permit for radon mitigation in Dover?
- Requirements vary by state. Many states require radon contractors to be certified (not just licensed). Some require permits for the penetration through the foundation slab. Check your state's radon program for specific requirements.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Dover 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.