There's a persistent assumption among new construction buyers that a brand new home doesn't have radon problems. New foundation, modern building techniques, sealed concrete. It should be fine.
It isn't.
Radon is a naturally occurring radioactive gas that seeps up through the soil and into buildings through cracks, gaps, and openings in the foundation. The key word is soil. Radon doesn't care how old the building is. It cares about the geology underneath it.
The EPA classifies the majority of Northeast Ohio counties as Zone 1, the highest radon potential designation in the country. Summit, Stark, Cuyahoga, Portage, Medina, and the surrounding counties all fall into this category. The predicted average indoor radon level in Zone 1 exceeds 4 pCi/L, which is the EPA's action threshold.
That means every home built on this ground is a candidate for elevated radon, regardless of when it was built.
Modern construction techniques that make homes more energy efficient can actually increase radon concentrations. Tighter building envelopes, better insulation, and sealed crawlspaces reduce air exchange between the interior and exterior. That's great for energy bills. It also means that radon entering through the foundation has fewer pathways to dissipate.
Older homes with drafty basements and leaky envelopes sometimes have lower radon levels simply because the gas escapes through the same gaps that let cold air in. A well-sealed new construction home traps radon more effectively.
Many new homes in Ohio include passive radon mitigation systems as part of construction. These typically consist of a gravel bed under the slab, a PVC vent pipe that runs from below the foundation up through the roof, and a sealed membrane.
Passive systems rely on natural air pressure differentials to vent radon before it enters the living space. They work in some homes. They don't work in all homes. The only way to know if your passive system is keeping radon below the EPA action level is to test.
If the passive system isn't sufficient, converting it to an active system by adding an inline fan to the vent pipe is a straightforward and relatively inexpensive upgrade. But you won't know you need it unless you test.
For new construction, we recommend testing after the home is completed and the HVAC system has been running for at least a week. This gives you a realistic baseline of what radon levels look like under normal living conditions.
Testing is also included in our New Build Protection Program as part of the phased inspection package. If results come back above the EPA action level, we can install a mitigation system to bring levels down. Front Line handles both the testing and the mitigation, so there's no handoff, no second contractor, and no delay.
New doesn't mean safe when it comes to radon. The ground beneath a 2026 build in Summit County is the same ground that was there in 1960. Test the home, know the levels, and mitigate if necessary. It's a straightforward process that protects your family's health for the long term.
Building or buying new construction in Northeast Ohio? Contact Front Line or book online to include radon testing in your new build inspection.
Serving Cleveland, Akron, Canton, Medina, Strongsville, and communities throughout Northeast Ohio, our experienced inspectors deliver clarity, honesty, and timely reports so you can confidently move forward with your real estate decisions.
