Radon in real estate

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Organization: Health Canada

Published: 2019-12-18

Radon — an invisible radioactive gas produced by the breakdown of uranium in the ground —is found in every home in Canada. Radon is the #1 cause of lung cancer for non-smokers, testing is the only way to know if the home has dangerous levels.

As a trusted source of information for home buyers and sellers, REALTORS® can help their clients by educating them about radon and encouraging testing.

How to help your clients with radon

Health Canada can help you support your clients in navigating this serious health issue.


There are radon experts across Canada available to answer your questions directly and support you and your clients in learning more about radon.

You can access free training  resources and order free educational materials  to share with your clients.

Take action

Your regular, ongoing communication with your clients provides a great opportunity to promote radon action. A three-month test is the only way to accurately find out what the radon level is in a home. Health Canada doesn’t recommend conducting a radon test during a real estate transaction so, when should you test?

In some cases, real estate professionals are using a hold back to allow for radon testing after a transaction is complete. If a high radon level is found in the home, mitigation can be completed using the hold back funds.

Homes with a low radon level are healthy homes—long term exposure to a high level of radon is the # 1 cause of lung cancer in non-smokers. Testing for radon is simple and can save lives. To test for radon visit www.takeactiononradon.ca/.

For more information visit www.canada.ca/radon.

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