Protect your health. Test your home.



Schedule a Radon Test from St. Louis Radon

  • Property to be tested

  •  Here's important information you should know about your radon test with St. Louis Radon Test and Mitigation. Please take a few seconds...

    Across the scientific and medical community, it's widely accepted that the potential presence of a radioactive substance like Radon in your home is something that should be taken seriously. That's why we take the time to get the details right and work with you to make sure we're always giving you the best, most accurate radon testing services you can find anywhere.

    "Closed-House Conditions" The majority of the time we spend in our homes throughout the year is under what is called "closed-house conditions".  That means that other than normal entrance and exiting, the doors and windows of your home are shut off to incoming outside air. To get an accurate reading of the amount of radon that could be in your home during these periods, Please make sure that all doors, windows and/or any vents to the outside remain closed for at least 12 hours before the test is scheduled to be placed, and that they remain closed during the test period.  Normal entrance and exit to and from the house is okay.

    Testing equipment will be picked up on the second business day following placement unless you are notified otherwise. 

      Please select a convenient day and time Monday - Friday.   Requests for next business-day service must be submitted no later than 2:00 PM Monday thru Friday.

  • (mm/dd/yyyy)
  • Requested Test Placement Time Window
  • Requested Test Pickup Time Window (Second business day following placement)
  • Is this a test for the homeowner's use or is this part of a real estate transaction?
  •   Homeowners, Real Estate Agents and Home Inspectors: Please select any of the following conditions that may apply to the property and how we can get access to it.

  • Access details (check all that apply.)
  • Does the Listing or Selling Agent need to be notified about this appointment to coordinate or approve the appointment with their client? If so, please provide us with their name and contact information.

  • Homeowners, Real Estate Agents or Home Inspectors: Will there be someone at the test property during the requested time window to allow access to the property, or would someone like to be there for any other

  • Are we meeting someone?
  • Should we call 30 minutes ahead?
  • Billing and Payment Information:

    The invoice for our testing services will be emailed to the email address you give us below at the time the test is scheduled. Payment is due before test results are emailed and can be made by personal check to the address shown on your invoice or handed to the testing technician. We also accept American Express, Visa, MasterCard and Discover. There is a 2.5% convenience fee for credit card payments.  

    48-Hour Continuous Radon Test Base Price: $140*

    Some testing situations dictate that more than one testing device is deployed for accurate results. Some of the variables include the size of the footprint of the foundation (over 2,000 square feet), existence of a crawl space, construction over concrete slabs or other situations. Please call us with any questions.

     *Outside the St. Louis Metro area, the price is $155. This includes zip codes 63015, 63016, 63019, 63020, 63021, 63023, 63028, 63055, 63061, 63072, 63077, 63084, 63090, 63332, 63341, 63348, 63349, 63357, 63362, 63369, 63373, 63379, 63390, 63028.

  • Foundation type(s) - Check all that apply
  • Whether you are scheduling the test for yourself on behalf of a client, or if you are a prospective home buyer not currently living at the test home address, please let us know where to send the test results and who will be responsible for payment. 

  • Test Results and Billing
  • Thank you for scheduling your radon test with St. Louis Radon Test and Mitigation!


The first step to help ensure the safety of you and your family’s health and safety is to have your home tested for radon. At St. Louis Radon, our professional testers deploy the latest in computerized electronic real-time radon monitoring technology to provide you with a comprehensive report, including a complete visual graph of radon level data points as recorded over a 48-hour sampling period.

Learn More About Testing


If testing indicates levels of radon that require action, our team of engineers and technicians will design and install a custom radon mitigation system to safely and effectively redirect radon and other soil gasses out of your home. We also take additional measures to seal and close other possible breaches in the foundation that could let soil gasses into the through cracks or drain tiles systems.

Learn More About Mitigation

New Construction

With new home construction projects, it is crucial to determine the level of radon that may be present in the soil before the home is built. It’s also critical to have the new home retested for potential radon concentrations immediately following occupancy. We also highly recommend installing an Active Dampness Control System (ADC) with every new build.

Learn More About New Construction