Radon testing
Short-term professional tests from about $150 (typical estimate).
Testing detailsRadon Mitigation in Greer, SC
Greer straddles two counties with different radon profiles. Whichever side of the line your home is on, we can test it, explain the numbers and install a system that fits your foundation.
Get a Free Quote Call (727) 300-6656One city, two counties, two radon pictures
Most of Greer lies in Greenville County, with roughly 25,600 residents on that side in 2020 and about 9,700 in Spartanburg County. That split matters when you read radon data.
Greenville County is the only EPA Zone 1 county in South Carolina. State radon program tests through June 2022 averaged 3.4 pCi/L there, with a top reading of 126.6. Spartanburg County is Zone 2, with an average initial test of 2.6 pCi/L and a high of 41.0.
Neither average tells you what is in your house. The EPA's action level is 4 pCi/L, and it suggests considering a fix between 2 and 4. It also recommends testing every home regardless of zone, since neighbors can get very different results. The EPA estimates radon is the second leading cause of lung cancer overall. Our Upstate radon levels guide breaks down the county numbers.
A fast-growing town with a lot of newer homes
Greer has changed quickly. It had 16,843 residents in 2000, about 35,300 in 2020, and an estimated 50,000 by 2025. Sitting about 12 miles northeast of Greenville, near the BMW plant and GSP airport, it draws a steady flow of new households. Nearly 73% of homes are owner-occupied.
That growth means many Greer homes changed hands recently, and buyers often test during the inspection window. South Carolina's property disclosure form asks sellers about known radon, though no state law requires a test.
On the system side, slab and basement homes usually get sub-slab depressurization. Crawl space homes usually get a sealed membrane with a fan drawing from underneath. Homes with both get a combination system. On the Greenville County side, newer homes may already have a radon-control pipe from the county's code, which can make adding a fan simpler.
What we do in Greer
Pick the starting point that fits where you are, whether that's a first test or a fix after a high result.
Sub-slab depressurization
For slab and basement foundations. Typical range $900–$2,500.
Learn about sub-slabCrawl space radon mitigation
Membrane-based systems for crawl spaces. Typical range $1,500–$3,500.
See crawl space systemsHome-sale radon mitigation
Quick help when a Greer inspection turns up a high number.
Buying or selling?Request a Greer radon quote
Send a few details and your test results if you have them. We usually reply the same day with next steps and a free estimate.
Greer radon FAQ
Does it matter which county my Greer home is in?
For data, yes. Greenville County is EPA Zone 1 with a 3.4 pCi/L average initial test, while Spartanburg County is Zone 2 with a 2.6 average. For your home, though, only a test counts. Houses in both counties can test above 4 pCi/L, and the mitigation methods are the same on either side of the line.
We're buying in Greer and the radon test came back high. What now?
Don't panic. High radon is fixable, and many buyers ask the seller to pay for a system or offer a credit. We can provide a written estimate quickly so both sides can negotiate. After the system goes in, we run a follow-up test to confirm the level dropped below the EPA action level.
How long does a radon install take in Greer?
Most single-family installs take a few hours and are done in a day. Crawl spaces that need more membrane work, or homes needing a combination system, can take longer. We'll tell you the expected timeline in your written quote, and we schedule the follow-up test after the system has had time to run.
Nearby areas
Close to Greer? We serve these neighboring communities, too.
Know your number. Fix it if it's high.
Free radon mitigation quotes across the Upstate — usually a same-day reply.