If you're buying or selling a home near Lake Norman, radon testing should be on your checklist — right alongside the home inspection itself.

Radon is a naturally occurring radioactive gas that forms from the decay of uranium in soil and rock. It seeps up through the ground and can accumulate to dangerous levels inside homes, particularly in crawl spaces, basements, and lower levels. It has no color, odor, or taste. The only way to know if your home has elevated radon levels is to test.

According to the EPA, radon is the second leading cause of lung cancer in the United States, responsible for approximately 21,000 deaths per year. It's a serious health risk — and one that's entirely preventable with proper testing and mitigation.

Radon Risk in the Lake Norman Area

North Carolina has areas of elevated radon potential, and the Piedmont region — which includes the Lake Norman area — is no exception. The underlying geology of Iredell, Mecklenburg, Lincoln, and Catawba counties includes granite and other uranium-bearing rock formations that can produce elevated radon levels.

The EPA divides the country into three radon zones based on predicted average indoor radon levels. Much of the Piedmont region falls in Zone 1 or Zone 2, indicating moderate to high radon potential. But zone maps are averages — individual homes can have radon levels far above or below the zone average depending on soil conditions, construction type, and ventilation.

The only way to know your home's actual radon level is to test it. Zone maps are not a substitute for testing.

What Is an Acceptable Radon Level?

The EPA recommends taking action to reduce radon levels in any home with a result of 4 picocuries per liter (pCi/L) or higher. The average indoor radon level in the US is about 1.3 pCi/L. The average outdoor level is about 0.4 pCi/L.

If your test result is between 2 and 4 pCi/L, the EPA recommends considering mitigation. At 4 pCi/L or above, mitigation is strongly recommended.

There is no completely safe level of radon exposure, but mitigation systems can typically reduce indoor levels to below 2 pCi/L in most homes.

How Radon Testing Works

We perform professional radon testing using EPA-approved methods. Here's what the process looks like:

• Test duration — We conduct 48-hour short-term tests using calibrated continuous radon monitors. The test runs for a minimum of 48 hours with closed-house conditions (windows and doors closed except for normal entry and exit).
• Placement — The monitor is placed in the lowest livable area of the home — typically the crawl space access area, first floor, or basement if present.
• Results — After the test period, we retrieve the monitor and provide you with a written report showing the average radon concentration over the test period.
• Turnaround — Results are typically available within 24 hours of monitor retrieval.

We add radon testing to any home inspection for a straightforward additional fee. It can also be scheduled as a standalone service.

What Happens If Radon Levels Are Elevated?

If your test result comes back at or above 4 pCi/L, don't panic — elevated radon is common and very fixable. Here are your options:

• For buyers — You can negotiate with the seller to install a radon mitigation system before closing, request a price reduction to cover the cost of mitigation, or in some cases, walk away if the seller is unwilling to address the issue. A radon mitigation system typically costs between $800 and $2,500 depending on the home's construction and the severity of the radon intrusion.
• For sellers — If your pre-listing radon test comes back elevated, installing a mitigation system before listing is often the smartest move. It removes a potential deal-killer, gives buyers confidence, and typically costs far less than the price reduction a buyer might demand.
• For current homeowners — If you've never tested your home and want to know your radon level, a standalone radon test gives you the information you need to make an informed decision about mitigation.

Radon Mitigation: How It Works

Radon mitigation systems work by creating a pressure differential that draws radon from beneath the home and vents it outside before it can accumulate indoors. The most common system is called sub-slab depressurization (SSD) — a pipe is inserted through the foundation slab or into the crawl space, connected to a fan that continuously draws radon-laden air out and exhausts it above the roofline.

These systems are highly effective. When properly installed by a certified mitigator, they typically reduce radon levels by 50 to 99 percent. Most homes can be brought below the EPA action level of 4 pCi/L — and often below 2 pCi/L.

We do not install mitigation systems, but we can refer you to certified radon mitigators in the Lake Norman area.

Radon and New Construction

Many buyers assume that new construction homes don't have radon problems. That's not accurate. Radon comes from the soil beneath the home — not from the building materials or the age of the structure. A brand-new home built on radon-producing soil can have elevated levels just as easily as a 40-year-old home.

If you're buying new construction in the Lake Norman area, we strongly recommend adding radon testing to your new home warranty inspection or pre-drywall inspection. Some builders install passive radon-resistant construction features, but these are not always sufficient — and they're not a substitute for testing.

Radon Testing for Lake Norman Communities

We provide radon testing throughout the Lake Norman area, including:

• Mooresville
• Cornelius
• Davidson
• Huntersville
• Denver
• Sherrills Ford
• Terrell
• Troutman
• Statesville
• Catawba
• Maiden
• Lincolnton

We also serve all of Iredell, Mecklenburg, Lincoln, Catawba, Rowan, Cabarrus, Gaston, and Alexander counties.

About At Ease Home Inspection Services

At Ease Home Inspection Services is owned and operated by Gary Cook (NC License #3812), with 30 years of experience in home improvement and inspection. Our lead inspector, Chris Williamson (NC License #6443), brings additional expertise and a commitment to thorough, honest work.

We are certified by Inspector Nation, with additional certifications in radon measurement, mold inspection, water testing, and manufactured home foundations. We serve the entire Lake Norman area, including Mooresville, Cornelius, Davidson, Huntersville, Denver, Sherrills Ford, Troutman, Statesville, and all surrounding communities within 50 miles.

Schedule Radon Testing Today

Don't guess about radon. Test.

• Call or text Gary at (704) 677-4414
• Call or text Chris at (678) 571-4123
• Schedule online through our contact page

We offer flexible scheduling throughout the Lake Norman area and deliver your radon test results promptly. Add radon testing to your home inspection or schedule it as a standalone service. Contact us today.