Radon Mitigation Cost in Pennsylvania: What Homeowners Actually Pay in 2026

Understanding radon mitigation cost Pennsylvania homeowners face is essential before hiring a contractor. Pennsylvania has some of the highest radon levels in the United States — approximately 40% of homes tested statewide exceed the EPA action level. Here is what mitigation actually costs across the state, from the Harrisburg corridor to the York-Lancaster valley.

Average Cost in Pennsylvania

Standard sub-slab depressurization systems in Pennsylvania range from $800 to $1,500. Central PA pricing (Harrisburg, Lancaster, York) is generally competitive due to high contractor density and consistent demand.

Standard single-point: $800–$1,200. Most PA homes with a single basement slab.

Multi-point: $1,200–$2,000. Larger homes or complex foundations.

Crawl space (sub-membrane): $1,200–$2,000. Sealed polyethylene barrier with fan system.

Combination: $1,500–$2,500+. Basement plus crawl space areas.

Cost by Pennsylvania Area

Harrisburg (Dauphin County): $800–$1,500. State capital with high transaction volume and competitive contractor market.

Lancaster (Lancaster County): $800–$1,500. One of PA’s highest radon areas. Limestone bedrock in the Lancaster Valley produces extreme readings.

York (York County): $800–$1,500. Similar geology and pricing to Lancaster.

Gettysburg (Adams County): $800–$1,500. Smaller market but consistent radon risk from the same geological formations.

What Affects Price

Foundation type. Poured concrete is cheapest. Block foundations need more sealing. Stone foundations (common in older PA homes) cost the most.

Home size. Additional suction points add $300–$500 each.

Radon level. Very high levels (10+ pCi/L, common in Lancaster County) may need higher-capacity fans or multi-point systems.

Pipe routing. Interior through closets is standard. Exterior adds slight cost.

Pennsylvania Licensing

Pennsylvania requires state certification for all radon testing and mitigation professionals through the PA Department of Environmental Protection (DEP). Mitigation contractors hold a 7000-series certification number. Always verify your contractor’s PA DEP certification before hiring — this is a legal requirement, not optional.

Ongoing Costs

Electricity: $50–$150/year. Fan replacement: $150–$300 every 5–10 years. Retesting: $15–$30 every 2 years with a DIY kit.

Get a Free Quote in Pennsylvania

One certified professional only. No bidding wars, no spam.

FAQ

Average cost in PA? $800–$1,500 for standard systems.

Does PA require licensed mitigators? Yes. PA DEP certification (7000-series) is legally required.

Insurance cover it? No.

Who pays? Negotiable between buyer and seller.

System lifespan? Piping is permanent. Fans last 5–10 years.

After You Submit

A certified professional will call within 15 minutes during business hours. After hours, by 8:30 AM next business day. One provider only.

Call or text: (240) 397-6515

RadonSafetyGuide.com is an independent resource. PA radon contractors must hold DEP certification.