How to Look

at a House

A blog with answers
to your questions about

Welcome to our blog!
We want you to be an informed homebuyer, and each blog post is a question that we have answered for our friends and customers over the years. Hope they help you make a good choice for your next home.

Here’s the full Alachua County radon map below, and under it is the Florida radon map (with Alachua County outlined in black.

    As you can see, the red and yellow zones are small in relation to the size of the state. A radon map is available for downloading at the Florida Department of Health website at for each of the following counties: Alachua, Brevard, Charlotte, De Soto, Gadsden, Hardee, Highlands, Hillsborough, Indian River, Leon, Manatee, Marion, Osceola, Polk, Putnam, Sarasota, and Seminole.

    The Department of Health also maintains a database of the percentage of homes in each zip code in Florida that have had their indoor radon level tested and the results reached or exceeded the 4.0 pico-curies per liter of air level at which active controls (mitigation) is recommended. You can check your zip code at

    Some zip codes have not had enough tests to provide statistical accuracy of the percentage results. Also, it’s important to note that both the radon maps and zip code percentages only tell you the odds of whether your particular home may have an elevated indoor radon level. The only way to be sure is to test.

While we hope you find this series of articles about home inspection helpful, they should not be considered an alternative to an actual home inspection by a local inspector. Also, construction standards vary in different parts of the country and it is possible that important issues related to your area may not be covered here.
©2016 - McGarry and Madsen Inspection


Answers to the most Frequently Asked Questions (FAQ) about radon:

  1. What is radon? Should I be concerned about it in Gainesville?

  2. This house has been empty and closed-up for months. Will the radon test come back sky-high?

  3. Can a homebuyer do their own radon test for a real estate transaction with a self-test kit?

  4. How was it determined that between 15,000 and 22,000 lung cancer deaths each year are caused by radon?

  5. What’s my chance of getting a high radon reading in Gainesville?

  6. How can I tell if a house has a radon mitigation system?

  7. Will opening the windows reduce the radon level in a house?

  8. What is the danger of radon in well water?

  9. Should homeowners get a pre-listing radon test before selling their home?

  10. Do granite countertops emit radon?

  11. Do I need to test for radon when buying a condominium?

  12. What are a homebuyer’s options when the radon test comes back high (4.0 pico-curies/liter or more)

  13. For how many years does an old radon test result remain valid?

  14. Can a mobile/manufactured home have a high radon problem?

  15. Where does radon come from?

  16. When were GFCI receptacle outlets first required?

  17. How long does it take to get the results of a radon test?

  18. Can the seller tamper with a homebuyer’s radon test to change the results?

  19. Can stormy weather change the radon in a house?

  20. Do older houses have higher radon levels than new houses?

  21. What is the operating cost of a radon mitigation system?

  22. Should I buy a house with a radon mitigation system?

  23. Is radon mitigation possible for a condominium?

Radon Testing


in Metro Gainesville

48-hour test, results same
day of test completion



when done at same
time as  home inspection

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