NC Radon Program

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NC Radon Home

Radon Testing & Real Estate Transactions

The radon testing guidelines when dealing with home purchases or sales are slightly different than normal EPA guidelines for testing planned by a homeowner, renter or resident. Real estate transactions involve financial issues, legal requirements and time-sensitive concerns. Radon testing conducted as a part of a real estate transactions will need to consider the following special issues:

• There is a greater potential for testing device interference and inaccurate results

• Test the home in the lowest level suitable for occupancy, since a buyer may choose to live in a lower area of the home than that used by the seller

• Consider testing or re-testing with a certified radon professional for unbiased and more accurate results

In addition to the strategies below, normal radon testing guidelines should be followed.

Recommended short-term testing strategies

Recommended short-term testing strategies

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2. Simultaneous Testing.  Two similar test devices are used in the same location for the same time period (at least 48 hours).  If the average is 4 pCi/L or more, mitigation is recommended.

3. Single Test.  Radon data is collected using a continuous radon monitor that integrates and records radon data hourly for at least 48 hours.  If the average is 4 pCi/L or more, mitigation is recommended.

Use a radon measurement professional who participates in a Radon Measurement Proficiency Program to conduct the radon test. 

List of radon testing and measurement professionals in North Carolina
 

For more detailed information refer to the EPA publication: "Home Buyer's and Seller's Guide to Radon"