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About Radon Mitigation

What is mitigation?

Reducing your radon exposure is the first step to lowering your risk. A radon mitigation system is any system or steps designed to reduce radon concentrations in the indoor air of a building.

The kind of radon mitigation system that will work best depends on the structure of your home. Some techniques will prevent radon from entering the home, while others reduce radon levels after it has entered. We recommend you hire a contractor who is trained to fix radon problems.

Standard radon mitigation systems are usually effective within 24 hours. The primary benefit is reducing the risk of developing lung cancer. Other benefits of installing a mitigation system include addressing the infiltration of moist soil air with radon, which may reduce the humidity level in the basement of the home.


What about the cost of radon mitigation?

Most homes can be fixed for about the same cost as other common home repairs. Cost will depend on the size and design of your home, and which radon reduction methods are needed.

At this time, the State of Oregon does not offer financial assistance to homeowners for radon mitigation. However, the following are other options for financial help with radon mitigation, depending on your situation:

  • Community Development Block Grant program funds rehabilitation and repair of affordable housing. For more information, call the U.S. Department of Housing and Urban Development (HUD) at (202) 708-3587.
  • "203k" program funds rehabilitation of single family homes. For more information, call HUD at (202) 708-3587.
  • Enhabit, a non-profit home renewal organization, offers the financing of radon mitigation systems to most of Oregon.  Learn more about their services at Enhabit's Clean & Safe Air webpage or call 1-855-870-0049.
  • Some carriers of employee Health Savings Accounts (HSAs) now consider radon mitigation as a qualified medical expense; check with your HAS about this possibility for you.

Things to consider when choosing a radon mitigation company:

We recommend that you consider the following:

  • Use a certified or qualified radon mitigation professional. You can find a list of qualified professionals on our Mitigation Companies page.
  • Choose a contractor to fix a radon problem just as you would choose someone to do other home repairs - get estimates and ask for/check references. Consider knowledge, experience, pricing and the mitigation techniques they plan to use.
  • Ask if they can guarantee (in a written contract) that the radon in your home will be reduced to a certain level.

The EPA's Consumer's Guide to Radon Reduction has provided a checklist to help guide you when evaluating and comparing contractors and also specific questions to ask.

*Oregon does not have state regulations that govern how companies mitigate for radon. Most mitigation companies follow technical standards/recommendations made by the EPA or the American Association of Radon Scientists & Technologists, Inc. (AARST). Many radon mitigation companies in Oregon reduce radon levels by using a method called sub-slab depressurization (see diagram on left-hand side of page).

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