Has Your Home Been Tested for Radon?

Homeowner Highlights


Have you ever heard of radon?  It’s an odorless, colorless gas and is the second leading cause of lung cancer in the United States.

Radon  can get trapped in our homes and be at such high levels that it can affect your health. And, you wouldn’t ever know it unless you tested for it!  Although the presence of Radon in San Diego County homes is rare, it is always good to be educated.

Learn more about radon, how to test for radon in your home and how to remediate it if you have high levels.

What Is Radon?

Radon is a radioactive gas that comes from the natural breakdown of uranium soil, rock and water. It moves up through the ground and into the air above. IRadon can get into your home through any foundation cracks or holes. It can also enter your home through well water.

According to the EPA, nearly one in 15 homes in the U.S. has an elevated radon level.   Any type of home can have a radon problem, even those without basements.

Radon in California

You can contact your state radon office to find out more about radon levels in your area. Even if your home is in a low level zone, you should still get your home tested. For example, homes that are next door to each other can have different indoor radon levels.

Based on 1990 sampling of 385 dwellings statewide, an estimated 88,000 single-family houses in California (1%) may contain radon beyond the recommended maximum.

For those of us in San Diego County, it is not as big of an issue. We have very low levels in this area.  Most home inspectors do not offer Radon gas testing in San Diego. According to the EPA, the test results would almost certainly come back negative. Inspectors would have to carry additional E&O insurance, which simply would not make financial sense. There are, however, some home inspectors who will test for Radon.

Testing for Radon

Testing for radon is actually easy and not complicated. It’s important to test the lower levels of your home. 

You can purchase or order online devices to test for radon. Or you can hire a qualified radon tester to come to your home. Some devices may be more appropriate for your needs and testing conditions. Make sure you are getting a reliable testing device.

Types of testing devices:

Passive devices – Don’t require power and are exposed to the air in your home for a specified period of time and then sent to a lab for analysis. Some devices are better at resisting test interference or disturbances. Includes charcoal canisters, alpha-track detectors, charcoal liquid scintillation devices, electret ion chamber devices.

Active devices – Require power and measure and record the amount of radon or its decay products in the air. Many can provide a report and also indicate if there are any swings in radon levels during the test period. Some also have anti-interference features. These active devices cost more than the passive ones. Includes continuous radon monitors and continuous working level monitors.

Short-term testing is typically from a minimum of 48 hours to 90 days. This type of testing may be something that a home buyer may request before purchasing a home, or if there are other time restraints rather than a real estate transaction.

Long-term testing typically lasts more than 90 days, and will usually provide a year-round average radon level.

No matter what type of testing you conduct, it’s important for family members to follow directions carefully and to keep any interference to a minimum so you can get reliable results.

Fixing High Radon Levels

The EPA recommends fixing your home if levels are between 2 and 4 pCi/L or more. The average indoor radon level is about 1.3 pCi/L. Remember that high levels of radon in your home is a health risk and a leading cause of lung cancer.

Don’t think that it’s complicated or expensive to fix any radon problems. It can be done without making major changes to your home, and the cost can be comparable to other home repairs.

High levels can be reduced several ways, including sealing cracks or installing venting pipes and fans or sub slab suction. Get estimates from radon mitigation contractors. They can determine the most appropriate system for your home.

Radon and Home Renovation

Before you embark on any major home renovation, get your indoor radon levels checked. This is especially true if you are renovating a basement or lower level room in your home. And test your radon levels after you have completed any work since levels can change.

Also, it is better and less expensive to install a radon-reduction system during your renovations than afterward.

Let us know if you have any questions about radon testing, especially if you are thinking of selling in the near future. For more information on radon:


Hi there!


Let's Meet



200 W. Marion Street
Punta Gorda, FL 33950


first-time homebuyers

Homeowner Highlights

Historic Home

All Articles

schedule your free consultation

Check out some more of my articles:

Hi there!


schedule your free consultation



Historic Homes

All Articles

Taking that first step to buy a home can be scary and daunting. Let me show you how!You’ll learn how to incorporate my strategies with your own desires to find a home that is the right fit for your lifestyle, your needs, and your budget. 

Sign up for my Series: 

"How to find the perfect home
for you and your budget"

* indicates required