Radon Testing for Real Estate Transactions: Everything You Need to Know


Radon Testing for Real Estate Transactions: Everything You Need to Know

What is Radon?

Radon is a radioactive gas that comes from the natural breakdown of uranium in soil, rock, and water. It is odorless, colorless, and tasteless, making it impossible to detect without proper testing. Radon is the second leading cause of lung cancer in the United States, responsible for an estimated 21,000 deaths each year. Radon can enter a home through cracks in the foundation, walls, and other openings, accumulating over time and potentially reaching dangerous levels.

Why Test for Radon?

Radon is a serious health risk, and testing is the only way to determine whether a property has elevated levels. If you are buying or selling a home, it is important to have it tested for radon. Many states require radon testing as part of the real estate transaction process. If high levels are found, it is important to take action to mitigate the issue and protect the health of those living in the home.

When to Test for Radon

Radon testing can be done at any time, but it is recommended to do it during the due diligence period of a real estate transaction. The due diligence period is the time period between the acceptance of an offer and the closing of the sale, during which the buyer can conduct inspections, appraisals, and other necessary assessments to ensure the property is in acceptable condition. This is also the time to perform a radon test. If high levels are found, the buyer can negotiate with the seller to either fix the issue or adjust the sale price accordingly.

Types of Radon Tests

There are two main types of radon tests: short-term and long-term.

  • Short-term tests: These tests last between 2 and 7 days, and provide a quick snapshot of radon levels in a property. They are often used during real estate transactions to determine if further testing is necessary.
  • Long-term tests: These tests last more than 90 days, and provide a more accurate measurement of radon levels over time. They are beneficial for those living in a home long-term to ensure levels remain at a safe level over time.
  • How Radon Tests are Conducted

    Radon testing is fairly simple and can be done by a professional or by the homeowner themselves using a test kit. The test is non-invasive and involves placing a small device in the lowest level of the home, usually the basement. The device should be left undisturbed for the duration of the test. After the test is complete, the device is sent to a lab to be analyzed. Results are typically available within a few days to a week.

    What to do if Radon Levels are High

    If high levels of radon are found in a property, it is important to take action to mitigate the issue. A professional radon mitigation contractor can install a system to reduce radon levels by drawing it out of the home and venting it to the outside. Costs for mitigation can vary depending on the severity of the issue and the type of system installed. It is important to hire a licensed and certified contractor to ensure the issue is properly addressed.


    Radon testing is a crucial step in protecting the health of those living in a property. If you are buying or selling a home, it is important to have it tested for radon during the due diligence period. Understanding the types of tests available, the process, and what to do if high levels are found can help ensure a safe living environment for all. For a complete educational experience, visit this specially selected external website. There, you’ll find additional and valuable information about the subject. radon removal!

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