Radon Mitigation Cost in Pennsylvania (2026)

Pennsylvania Radon at a Glance

Pennsylvania averages 7.7 pCi/L statewide — second only to Iowa and the Dakotas among large states. The PA Department of Environmental Protection (PA DEP) estimates that 40% of Pennsylvania homes test above the action level, with much higher rates in the southeast.

The Reading Prong — a geological formation of uranium-bearing gneiss and pegmatite running through Berks, Montgomery, Bucks, Northampton, and Lehigh counties — creates some of the highest residential radon concentrations in the world. Homes in Boyertown, Reading, Allentown, and Bethlehem routinely test 20–100+ pCi/L.

Pennsylvania Licensing Requirement

Pennsylvania is one of the few states that legally requires certification for radon mitigators. PA DEP mandates certification through an approved program (NRPP or NRSB). Hiring an uncertified contractor violates state law and may void insurance coverage.

Always verify certification at dep.pa.gov or directly at radonproficiency.org before signing.

What Mitigation Costs in Pennsylvania

Slab or Basement: $900–$2,200

Pennsylvania's mature mitigation market has competitive pricing:

• Simple basement, standard routing: $900–$1,400
• Finished basement, Philadelphia suburbs: $1,200–$2,000
• Reading Prong area (often needs high-suction fan): $1,400–$2,400
• Pittsburgh metro: $900–$1,800

Crawl Space: $2,500–$7,000

Central PA, Appalachian communities, and western PA have a high rate of crawl space foundations. These are more expensive:

• Basic crawl space: $2,500–$3,800
• With vapor barrier upgrade: $3,200–$5,500
• Difficult mountain access: $4,500–$7,000

Reading Prong Premium

Homes in the Reading Prong often require upgraded equipment:

• Higher-suction fans (GX3 or GX5 instead of standard XP201): adds $75–$150
• Multiple suction points for extreme levels: adds $400–$800
• Post-install test showing levels above 4 pCi/L: contractor responsible for follow-up at no charge

What Makes PA Different

Pennsylvania has one of the most active state radon programs in the country. PA DEP runs public education campaigns, offers testing assistance through county offices, and maintains certified contractor lists. This drives awareness and market competition — generally good for homeowners.

Pennsylvania Resources

• PA DEP Radon Division: 800-23-RADON (800-237-2366)
• PA DEP certified contractor list: dep.pa.gov
• Reading Prong radon map: dep.pa.gov/radon

Find certified radon mitigators in Pennsylvania →