Pennsylvania radon resources
Pennsylvania requires radon testing, mitigation, and laboratory services to be performed by professionals certified by the Department of Environmental Protection. That is a genuine state certification rather than a voluntary credential.
Elevated results are common enough across much of Pennsylvania that local agents treat radon as an expected line item rather than an unusual finding.
Who answers what in Pennsylvania
- Pennsylvania Department of Environmental Protection (DEP) Radon Division
- Certification of radon testing, mitigation, and laboratory services; certification verification; testing guidance; and state radon information.
- Your municipal or county code office
- Permit requirements for the slab penetration and dedicated electrical circuit.
Licensing and credentials
Pennsylvania requires radon testing, mitigation, and laboratory services to be performed by DEP-certified professionals. Ask any bidder for their DEP certification number and confirm it is current and covers mitigation. Testing and mitigation are certified separately.
What to verify before you hire
- Ask for the DEP certification number as written on the contract.
- Confirm it is current and covers mitigation rather than testing alone.
- On hillside or multi-level housing, ask which soil-contact zones the price covers.
- Confirm the verification test is inside the quoted price.
Disclosure and transactions
Pennsylvania’s seller disclosure law requires sellers to disclose known material defects, and the standard disclosure form addresses radon testing and results. Pennsylvania does not require a seller to test or to mitigate — the response to an elevated result is negotiated.
Testing resources
Start with a short-term test on the lowest lived-in level under closed-building conditions. On stepped or hillside housing, the lowest floor with soil contact is the measurement point even if daily life happens above it. DEP publishes testing guidance and maintains certified professional listings.
What this page deliberately does not state
We do not restate DEP certification fees, renewal cycles, or examination requirements, because those change and cannot be re-verified here. DEP is the authoritative source.
Pennsylvania markets and cities we cover
More on Pennsylvania
- For Pennsylvania radon contractors — what we verify before routing a request, and how requests are matched.
- Who licenses radon work — State licence, state certification, or national credential — and what each means when you check a contractor.
- Licensing change mid-project — Open quote, scheduled install, or pending verification — how a regime change lands on each.
- All state resource centres — how the ten states we serve differ on licensing and disclosure.
- How state radon certification differs — the homeowner guide to what a credential actually means.
Sources
- U.S. EPA — Radon
- U.S. EPA — A Citizen’s Guide to Radon
- U.S. EPA — Home Buyer’s and Seller’s Guide to Radon
Get quotes from credentialed Pennsylvania contractors
Free to request and no obligation. We verify credentials with the issuing authority before any request routes to a contractor.