Radon Inspection

Schillerstrom Home Inspection offers radon testing for $125, when initiated at the time of the inspection. (A test without an inspection is $150.)The radon testing service is designed for real estate transactions; I give quick turnaround with 48-hour testing, using continuous electronic monitors that give an hour-by-hour breakdown of the test results. If you’re interested in having your own home tested, your best option is to purchase a Do-It-Yourself test kit. I recommend long-term test kits for the most accurate results.

Since radon is radioactive no amount of exposure can be called safe. The US EPA has defined what they consider to be an acceptable level, and the DNS has adopted the same standard. Elevated radon levels can easily be reduced. A home with a properly functioning active mitigation system will have the lowest radon level possible in that home. It is important to note that the seller of any home known to have tested above the Action Level of 4.0 pCi/L must disclose that information in a real estate transaction in South Carolina. For a more complete discussion of Radon and South Carolina radon levels, please read my blog.

What are the effects of Radon Exposure?

Long term exposure is known to cause lung cancer in humans. Ten percent of all lung cancer deaths annually are attributed to radon exposure.

Radon gas decays into radioactive particles that can get trapped in your lungs when you breathe. As they break down further, these particles release small bursts of energy. These can damage lung tissue and lead to lung cancer over the course of your lifetime. There are no immediate symptoms associated with radon exposure, and not everyone exposed to elevated levels of radon will develop lung cancer. The amount of time between exposure and the onset of the disease may be many years.

There is no evidence that children are more at risk from radon exposure, but minimizing lifetime exposure should start as early as possible.

EPA Assessment of Risk from Radon in Homes

EPA 402-R-03-003 June 2003

Radon Level a

Lifetime Risk of Lung Cancer Death (per person) from Radon Exposure in Homes



Never Smokers

Current Smokers


General Population


3.6 out of 100

26 out of 100

11 out of 100


1.8 out of 100

15 out of 100

5.6 out of 100


1.5 out of 100

12 out of 100

4.5 out of 100


.73 out of 100

6.2 out of 100

2.3 out of 100


.37 out of 100

3.2 out of 100

1.2 out of 100


.23 out of 100

2.0 out of 100

.73 out of 100


.073 out of 100

.64 out of 100

.023 out of 100

a Assumes constant lifetime exposure in homes at these levels.

b Estimates are subject to uncertainties as discussed in Chapter VIII of the risk assessment.. c Note: BEIR VI did not specify excess relative risks for current smokers.