Short Answer
A radon test measures the level of radon gas in a home. Radon is a radioactive gas that can cause lung cancer and is the second leading cause of lung cancer in the United States. The EPA recommends taking action if levels are at or above 4 picocuries per liter. Radon is common in New Jersey, especially in areas with certain soil types. Getting a radon test is strongly recommended, especially for homes with basements. Testing costs $100 to $200 and is a small price for peace of mind.
Radon is an invisible, odorless radioactive gas that comes from the natural breakdown of uranium in soil, rock, and water. It can enter homes through cracks in the foundation, floor drains, sump pumps, and gaps around pipes. New Jersey has areas with elevated radon levels, particularly in the northern and central parts of the state. Radon testing is simple and inexpensive. Short-term tests take 2 to 7 days and are the most common. Long-term tests take 90 days to a year and provide a more accurate average reading. If radon levels are above 4 pCi/L, a radon mitigation system can be installed. Mitigation typically costs $800 to $1,500 and involves installing a vent pipe and fan to pull radon from below the foundation and exhaust it outside. Sellers are not required to fix radon issues in New Jersey, but many will negotiate when the test shows elevated levels.
Bob's Advice
Redfin Senior Agent · AI Certified Agent
I always recommend a radon test to my buyers. It is inexpensive, non-invasive, and could save your life. I have seen radon levels in South Jersey homes range from perfectly safe to well above the EPA action level. If the test comes back high, do not panic. A mitigation system is a straightforward fix that costs about the same as a new appliance. Most sellers are willing to address radon issues because the health concern is real and the fix is relatively affordable. Let us include radon testing in your inspection period so you have complete information.
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