Harrisburg, PA
Radon Testing for Buying or Selling a Home
Pennsylvania law requires home sellers to disclose whether they've previously tested for radon, which makes testing a standard part of most Dauphin County real estate transactions. Buyers typically request a short-term test during the inspection period; sellers who test ahead of listing avoid last-minute negotiation surprises. We work on the timelines real estate transactions actually require.
What's Included
- Fast turnaround to fit inspection-period deadlines
- Documentation formatted for real estate transactions
- Peace of mind for both buyers and sellers before closing
Common Questions
How much does radon mitigation cost in Harrisburg, PA?
Most Dauphin County radon mitigation systems cost $900–$2,300, with a standard single-family home with a basement typically running $1,000–$1,500 for a sub-slab depressurization system. More complex foundations, multiple systems, or difficult access can increase cost.
Does Dauphin County actually have a radon problem?
Dauphin County is rated EPA Zone 1 — the highest radon potential rating on the EPA's official Map of Radon Zones — driven by limestone, dolomite, and shale bedrock beneath the Susquehanna Valley. That doesn't mean every home has high levels — it means testing is genuinely worthwhile here rather than a formality, since results vary significantly from house to house even nearby.
What EPA radon zone is Dauphin County in?
Dauphin County is rated EPA Zone 1 on the agency's official Map of Radon Zones — the highest of the EPA's three radon potential zones, meaning the county's predicted average indoor screening level is above 4 pCi/L, the same level the EPA recommends fixing a home at. A Zone 1 rating reflects a county-wide prediction based on geology, soil, and existing test data, not a guarantee about any specific house — testing your own home is still the only way to know its actual radon level.
Get a free radon testing quote for your Dauphin County home
Fast scheduling, clear pricing, and results measured against the EPA action level.