Radon Testing in Onondaga County NY: A Syracuse Home Inspector Explains the Risks

Radon Testing in Onondaga County, NY: A Home Inspector’s Perspective

As a home inspector working here in Onondaga County, I’m often asked about radon gas—what it is, whether it’s a concern locally, and whether buyers should include a radon test during a home inspection. My goal with clients is never to alarm, but to inform. Radon is one of those topics where straightforward facts go a long way in helping buyers make confident decisions.

What Is Radon?

Radon is a naturally occurring radioactive gas that forms when uranium in soil and rock breaks down. It’s colorless, odorless, and tasteless, which means the only way to know if it’s present at elevated levels is through testing. Radon enters homes through cracks in foundations, gaps around pipes, sump pits, and other openings where the structure meets the ground.

Because it comes from the soil, radon is not a “house problem” in the traditional sense—it’s a ground condition that can affect homes of any age, size, or price range.

Is Radon an Issue in Onondaga County?

In Central New York, including Onondaga County, radon is not uncommon. Certain geological conditions in New York State are known to produce measurable indoor radon levels. The New York State Department of Health has identified many counties, including ours, where elevated radon levels are found in a percentage of homes.

That doesn’t mean every home has high radon. In fact, I regularly see results that are low, moderate, or occasionally elevated. Two homes next door to each other can test very differently. Soil composition, foundation type, ventilation, and even seasonal factors can influence results.

The key point: radon is present in our region at levels that make testing reasonable, especially during a real estate transaction.

Should Home Buyers Test for Radon?

From a home inspector’s standpoint, radon testing is a relatively simple, affordable add-on that provides useful information. The United States Environmental Protection Agency (EPA) recommends taking action if radon levels are at or above 4.0 picocuries per liter (pCi/L). Many buyers use that benchmark when evaluating test results.

In a real estate context, testing is typically done over a short-term period (often 48 hours) under closed-house conditions. The monitor is placed in the lowest livable area of the home, and the results provide a snapshot of radon levels during that timeframe.

For buyers, the decision to test usually comes down to risk tolerance and desire for information. Since radon can’t be detected without a test, including it in the inspection process eliminates guesswork.

What If Levels Are Elevated?

If a home tests above the EPA’s recommended action level, mitigation is a well-established solution. Radon mitigation systems are designed to vent soil gases from beneath the foundation to the exterior, typically above the roofline. These systems are common throughout New York and are generally reliable when properly installed.

Importantly, elevated radon levels are not unusual in real estate transactions, and mitigation is not considered an exotic or experimental fix. It’s a standard improvement, similar in concept to adding ventilation or drainage controls.

My Approach as a Home Inspector

When I discuss radon with clients in Onondaga County, I present it as a data point—not a scare tactic. It’s part of understanding the overall condition of the property. Just like evaluating the roof, electrical system, or foundation, radon testing provides measurable information that buyers can use in their negotiations or long-term planning.

Some buyers choose to test every time. Others make case-by-case decisions depending on the property and their comfort level. There’s no one-size-fits-all answer, but in our region, testing is common enough that most real estate professionals expect the conversation to come up.

Final Thoughts

So, is radon an issue in Onondaga County? It can be. Is it present in every home? No. Is it testable and manageable? Yes.

From my perspective, radon testing during a home inspection is simply part of doing due diligence. It provides clear information about a naturally occurring environmental factor that varies from house to house. With accurate data in hand, buyers can make informed, rational decisions—without fear, just facts.

If you’re purchasing a home in Onondaga County, it’s worth considering whether having your inspector test for radon fits into your overall inspection strategy.