The testing of new construction homes for radon gas can vary depending on local building codes, regulations, and practices. In New Hampshire there is no requirement for new construction homes to be tested. One of several reasons why radon testing may not be universally required for new construction homes is that radon levels can vary significantly from one region to another. In areas where radon is less prevalent or where levels are generally low, there may be less emphasis on mandatory testing for new construction. Typically Building codes and regulations are determined at the local or national level, and they can vary. Not all regions have adopted specific codes that mandate radon testing in new construction. Without such requirements, builders may not be obligated to conduct radon tests during the construction process.

Because the testing is not required, some builders and homeowners may perceive radon testing as an additional cost, and if it is not a mandatory requirement in their area, they may choose to forgo testing to save money during the construction process.    Awareness of the health risks associated with radon can vary. In regions where there is less public awareness or concern about radon, there may be less pressure to include radon testing in new construction projects.  During the construction process, there is often a focus on various building inspections to ensure compliance with safety and structural standards. Radon testing may not be prioritized or required as part of these inspections. For those builders that would like to take into account radon exposure the EPA has generated information on construction of “Radon Resistant Homes” that information may be found at https://www.dhhs.nh.gov/sites/g/files/ehbemt476/files/documents/2021-11/partner-epa-buildradonout.pdf In some cases, even if radon testing is not mandatory during construction, homeowners may choose to test for radon after moving into their new homes. This allows them to assess the radon levels and take corrective measures if necessary.

Many new home buyers are not aware of the presence of radon in their homes because it is invisible and odorless.  Testing for radon is crucial, especially in areas where elevated levels are more common. Young families may not be aware of the potential risk, making it essential to educate and promote radon testing and mitigation. Radon is the second leading cause of lung cancer after smoking. When radon gas is inhaled, it can damage lung tissue and increase the risk of lung cancer. Exposure to ionizing radiation can potentially disrupt normal cell processes, making children more susceptible to the adverse effects. According to New Hampshire DHHS “The U.S. Environmental Protection Agency (EPA) and the Surgeon General’s office estimate radon is responsible for more than 20,000 lung cancer deaths each year in the U.S. About 2,900 of these deaths occur among people who have never smoked.” It’s important for families, especially those with young children, to test their homes for radon regularly and take measures to mitigate elevated levels, such as improving ventilation or installing radon mitigation systems. This proactive approach can help ensure a healthier indoor environment for everyone in the family.

While radon testing during construction may not be universally required, homeowners can take the initiative to have their home tested independently, with J.S. Kelley Home Inspections ( you can schedule an appointment that works with your calendar at: https://go.thryv.com/site/JSKelleyHomeInspections/online-scheduling?service=gp14bacwxaw0i2gp)      If elevated radon levels are detected, mitigation measures, such as installing radon ventilation systems, can be implemented to reduce the risk of long-term exposure.  As awareness of radon-related health risks continues to grow, building codes and regulations may evolve to include more widespread testing requirements for new construction homes in various regions. Radon exposure is cumulative over time. If young families are exposed to elevated levels of radon for an extended period, the risk of developing lung cancer later in life increases. Reducing radon exposure early on can help mitigate these long-term risks.