"Radon is the second leading cause of lung cancer in the United States. The only way to know your home's level is to test it. Bradley & April Wilburn — both SC Licensed Home Inspectors — perform professional radon testing across Greenville and the Upstate."
Radon is a colorless, odorless, tasteless radioactive gas that comes from the natural breakdown of uranium in soil and rock. It seeps up through foundations, slabs, and crawlspaces and can build up to dangerous levels inside homes — especially in tightly sealed, energy-efficient buildings. According to the EPA, radon is the second leading cause of lung cancer in the United States and the leading cause among non-smokers, responsible for an estimated 21,000 deaths every year. Because radon has no taste, color, or smell, the only way to know your home's radon level is to test for it.
Bradley Wilburn (SC Licensed Home Inspector #48751) and April Wilburn (SC Licensed Home Inspector #48528), the husband-and-wife team behind Carolina Quality Home Inspection, perform professional radon testing across Greenville and the Upstate using EPA-protocol continuous radon monitors. We have been testing Upstate-area homes since 2013 — for buyers in active real estate transactions, for sellers preparing their homes for market, and for current homeowners who simply want to know their level. Radon testing can be performed on its own or scheduled together with a general home inspection; either approach delivers the same EPA-protocol accuracy.
Upstate South Carolina has elevated radon potential. The Piedmont's underlying granite and gneiss bedrock contains trace amounts of uranium that decay naturally over time, releasing radon gas into the soil and into the homes built above it. The EPA's Radon Zone Map places Greenville County, Spartanburg County, Pickens County, Anderson County, and surrounding Upstate counties in Zone 2 — moderate radon potential, with documented homes throughout the region testing well above the EPA action level of 4.0 pCi/L (picocuries per liter). Some Upstate homes test at 2 or 3 times the action level — sometimes more. Without a test, there's simply no way to know.
The good news: elevated radon is a solvable problem. When a test comes back high, professional radon mitigation systems can reduce levels dramatically — often by 75% to 99% — for a few hundred to a couple of thousand dollars depending on the home. The best outcome is testing low and never thinking about it again. The next-best outcome is testing high, mitigating, and protecting your family's lungs for the lifetime of the home. Either way, the test itself is the critical first step. "A Well-Maintained Home Is A Safe Home."™
The EPA classifies Greenville, Spartanburg, Pickens, and Anderson counties as Radon Zone 2 — moderate potential, but the reality is that radon levels can vary dramatically from house to house even on the same street. We have tested homes in Greenville, Taylors, Greer, Mauldin, Simpsonville, Travelers Rest, Easley, Spartanburg, and Anderson where one home reads below 2.0 pCi/L and a neighbor's home reads above 8.0 pCi/L. Soil composition, foundation type, basement vs. slab vs. crawlspace, ventilation, and construction tightness all influence the result.
Older Upstate homes — historic district properties, mill village cottages, mid-century brick — and newer energy-efficient new construction can both produce elevated radon readings. Don't assume your home's age, neighborhood, or foundation type makes you safe. The only way to know is to test.
Professional-grade calibrated continuous radon monitor placed in the lowest livable level of the home for the standard 48-hour test period.
We document closed-house conditions per EPA protocol — windows and doors closed except for normal entry/exit — for accurate results that meet real estate transaction standards.
CRM equipment logs hourly readings and detects tampering or movement, giving you confidence the test conditions held steady throughout the 48 hours.
Your report shows the average reading in pCi/L, the EPA action level (4.0 pCi/L), and a clear assessment of where your home falls — no ambiguous conclusions.
Your full radon report is delivered within 24 hours of test pickup — clear, jargon-free, and suitable for sharing with your Realtor, lender, or attorney.
If your test comes back elevated, we explain what your options are in plain English — without scare tactics or upselling. Mitigation is solvable, and we'll help you understand the path forward.
Call or text us with the property address and your timeline. Most Upstate radon tests can be scheduled within 2 to 5 business days.
Bradley or April places the EPA-protocol continuous radon monitor in the lowest livable level of the home and verifies closed-house conditions.
The CRM runs for the standard 48-hour minimum test period, logging hourly readings continuously without interruption.
We pick up the equipment, generate your report, and email the results within 24 hours — ready to share with your Realtor, lender, or attorney.
Bradley and April are both SC Licensed Home Inspectors. You get the personal service and reliability of a husband-and-wife family team — not a rotating contractor.
Calibrated continuous radon monitors that meet EPA protocols and real estate transaction standards. Hourly logging, tamper detection, and accurate results every time.
Reports delivered within 24 hours of test pickup. Plain English. No alarmism, no upselling — just your home's actual radon level and what it means for you.
Answers to the most common questions Upstate homebuyers and homeowners ask about radon testing.
The standard EPA-protocol test runs for a minimum of 48 hours. The continuous radon monitor is placed in the lowest livable level of the home, runs for the full test period, and is then picked up. Your full report is delivered within 24 hours of pickup — so total turnaround is typically 3 to 4 days from test placement to report delivery.
The EPA action level is 4.0 pCi/L (picocuries per liter). If your home tests at or above 4.0 pCi/L, the EPA recommends mitigation. The EPA also notes that no level of radon is completely safe and that homes testing between 2.0 and 4.0 pCi/L should consider mitigation. Your full report shows your home's exact reading and where it falls relative to those thresholds.
Elevated radon is a solvable problem. Professional radon mitigation systems — typically a sub-slab depressurization system installed by a licensed mitigation contractor — can reduce radon levels by 75% to 99% in most homes. We'll explain your options in plain English without scare tactics, and we don't sell mitigation services ourselves so our recommendation is unbiased. Many Upstate homes have been mitigated successfully for a few hundred to a couple of thousand dollars.
Hardware-store charcoal kits exist and they're better than no test, but they have real limitations — no tamper detection, no hourly data, longer turnaround for results, and they're not always accepted in real estate transactions. Professional EPA-protocol continuous radon monitor testing is the gold standard, especially when buying or selling a home. Call or text 864-684-2475 to schedule your test.
Carolina Quality Home Inspection performs professional radon testing across Greenville and the entire Upstate service area. Click any city below to learn more about our services in that area.
Call Bradley & April today • SC Licensed Home Inspectors • EPA-Protocol Testing • "A Well-Maintained Home Is A Safe Home"™