EPA Guide to Radon
Buyer's and Seller's Guide to Radon
On this page: b. If the Home Has Not Yet Been Tested for Radon...
Make sure that a radon test is done as soon as possible. Consider including provisions in the contract specifying: Where the test will be located; Who should conduct the test; What type of test to do; When to do the test; How the seller and the buyer will share the test results and test costs (if necessary); and When radon mitigation measures will be taken, and who will pay for them. Make sure that the test is done in the lowest level of the home that could be used regularly. This means the lowest level that you are going to use as living space whether it is finished or unfinished. A state or local radon official or qualified radon tester can help you make some of these decisions. If you decide to finish or renovate an unfinished area of the home in the future, a radon test should be done before starting the project and after the project is finished. Generally, it is less expensive to install a radon-reduction system before (or during) renovations rather than afterwards.
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