Radon Mitigation Cost in Florida (2026)

Radon in Florida: Where the Risk Is

Florida is mostly EPA Radon Zone 3 (low predicted average), but that map is misleading. Central Florida's phosphate mining belt — Polk, Hillsborough, Alachua, Marion, and surrounding counties — consistently produces indoor radon readings well above 4.0 pCi/L. This is one of the more counterintuitive radon hotspots in the country.

North Florida also has elevated readings due to limestone geology. The Florida Panhandle runs lower. But no Florida home should be assumed safe without testing.

Cost by Foundation Type

Slab-on-Grade: $900–$1,800

Almost every Florida home built after 1960 is slab-on-grade. This is the least expensive foundation to mitigate — a single drill-through with exterior-mounted PVC and a fan brings most homes under control in a day.

• Standard slab, 1,500–2,500 sq ft: $900–$1,400
• Larger home or complex layout: $1,300–$1,800
• Multiple zones (attached garage, addition): $1,500–$2,200

Older Pier-and-Beam (Pre-1960): $2,000–$4,500

Some older Florida homes, particularly in Jacksonville, Gainesville, Tallahassee, and historic coastal areas, have pier-and-beam construction. Costs depend heavily on crawl space access and soil conditions.

Florida-Specific Cost Factors

Phosphate soil: Homes in Central Florida's phosphate belt can have very high radon levels (10–30+ pCi/L), sometimes requiring higher-suction fans or multiple suction points. This adds $300–$800 over a standard installation.

Moisture and humidity: Florida's climate means crawl space moisture management is critical. Contractors may recommend encapsulation or drainage improvements alongside mitigation — always ask for a separate itemized quote for each component.

Exterior fan longevity: Florida's sun and salt air degrade exterior components faster than inland states. Ask your contractor about UV-resistant pipe fittings and fan housings.

Contractor availability: The Tampa Bay, Orlando, Jacksonville, and Miami metros have multiple certified contractors. Rural North Florida may have fewer options. The Florida Department of Health maintains a referral list.

State certification: Florida does require radon mitigators to be licensed through the Florida Department of Health under the Radon Protection Program. Always verify state license number AND NRPP/NRSB certification.

What a Quote Should Include

• Pre- or post-installation test kit
• Core drilling through slab
• PVC pipe and fan installation
• All necessary slab and penetration sealing
• Written 4.0 pCi/L performance guarantee
• Fan manufacturer warranty (usually 5 years)

Getting Quotes

Get two to three quotes in any Florida metro — pricing competition is real. Ask each contractor to show their Florida state radon license number (not just NRPP/NRSB). Verify the license at floridahealth.gov.

Florida Resources

• Florida Dept of Health Radon Program: floridahealth.gov/environmental-health/radon
• FL Radon Contractor Lookup: floridahealth.gov (search radon contractor license)
• Verify NRPP: radonproficiency.org
• Verify NRSB: nrsb.org

Find certified radon mitigators in Florida →