New homes
Radon in new homes in Butler County
New construction doesn't mean low radon. The EPA says every new home should be tested as soon as possible after you move in, even if it was built to be radon-resistant.
$800–$1,200 typical system in PA
Pennsylvania DEP's range. Free quote, no obligation, from an installer certified by the PA Department of Environmental Protection.
What does your test result mean?
Enter the radon level from your test report.
General guidance from the EPA and Pennsylvania DEP, not a substitute for a certified professional's assessment.
Why new homes can have radon
Radon comes from the soil under the house, not from the age of the house. A tight, energy-efficient new home can still draw in soil gas through openings in the foundation. Butler County is rated high radon hazard potential by the EPA, so new homes in places like Cranberry Township, Adams Township and Mars are worth testing.
What radon-resistant construction includes
The EPA describes these features, often called RRNC:
- Gas-permeable layer. Gravel or similar material under the slab so soil gas can move freely.
- Plastic sheeting over that layer and under the slab, or over the floor of a crawl space.
- Sealing and caulking of below-grade openings in the foundation.
- Vent pipe. A 3- or 4-inch gas-tight pipe from under the slab up through the roof.
- Junction box in the attic so a fan can be added easily, plus power for a fan alarm.
Passive vs. active
A system without a fan is called passive. If your test comes back at 4.0 pCi/L or higher, the EPA says a fan can be added to make it an active system. That's usually simpler than installing a full system from scratch, but have a certified mitigator check it.
Questions to ask your builder
- Were radon-resistant features used? Which ones?
- Is there a vent pipe and an attic junction box for a fan?
- Has the home been tested since it was finished?
The EPA says building radon-resistant features in during construction is easier and cheaper than fixing a radon problem later.
Sources: EPA, Buying a New Home (2024) · PA DEP, January 2026
Who you'll talk to
An independent referral to a certified installer
Butler County Radon Help is a referral service, not an installer. When you request a quote, we connect you with a radon mitigation company certified by the Pennsylvania Department of Environmental Protection that serves Butler County. The quote is free, and you're never obligated to hire anyone.
Check any company yourself
Look it up in the PA DEP radon services directory, or call DEP at 1-800-23-RADON.
Service area
Serving all of Butler County
- Butler
- Cranberry Township
- Zelienople
- Harmony
- Evans City
- Mars
- Valencia
- Seven Fields
- Saxonburg
- Slippery Rock
- Chicora
- Prospect
- Adams Township
- Jackson Township
- Center Township
- Penn Township
Good to know
Your radon questions, answered.
Straight answers from EPA and Pennsylvania DEP guidance.
More guides: What your test result means · How to test for radon · Radon mitigation cost · Buying or selling a home · Radon in new homes
Do new homes need a radon test?
Yes. The EPA says every new home should be tested as soon as possible after occupancy, even if it was built to be radon-resistant.
My new home has a radon pipe. Am I covered?
Not necessarily. A pipe without a fan is a passive system. Test the home, and if the result is 4.0 pCi/L or higher, a fan can usually be added.
Who can add a fan to a passive system?
Pennsylvania requires radon mitigation contractors to be certified by DEP.
Does Pennsylvania require new homes to be radon-resistant?
Requirements vary. Ask your builder and your municipality's building office what was done for your home.
Free quote
Ready to lower your radon?
Tell us a little about your home, and we'll connect you with a DEP-certified installer serving Butler County.
- No cost to request a quote
- Shared with one certified installer, not sold to a list
- Mention a closing date and it's flagged as urgent