Do New Homes Need Radon Testing?

Yes. A newly built home can still have elevated radon. Even a home built with radon-resistant construction features should be tested after occupancy or completion.

Why Can a Brand-New Home Have Radon?

Radon comes from the natural breakdown of uranium in soil and rock. It can move into a building through openings and pressure differences around the foundation. New construction does not eliminate that possibility.

What If the Builder Installed Radon-Resistant Features?

EPA guidance specifically recommends testing a new home even when radon-resistant construction techniques were used. Testing confirms the actual indoor level after the home is built.

What If the New Home Tests at 4.0 pCi/L or Higher?

If a home with passive radon-resistant features tests at or above the EPA action level, the system may need to be activated or otherwise evaluated by a qualified radon mitigation professional.

Should I Test Before Finishing the Basement?

Testing before and after major changes to the lower level can be useful because living patterns and building conditions can change. If the basement becomes regularly occupied, EPA guidance supports retesting on that level.

EPA Source

EPA: How to Protect Your Family from Radon When Buying a Newly Built Home

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General educational information only. For current federal guidance, see the U.S. EPA radon resources linked on this page.