Radon testing
A professional short-term test, typically from about $150.
Start with a testRadon Mitigation in Simpsonville, SC
Simpsonville keeps adding neighborhoods, and every one of them sits in Greenville County, South Carolina's only EPA Zone 1 county. We help Simpsonville homeowners test, understand results and lower radon when needed.
Get a Free Quote Call (727) 300-6656Radon levels around Simpsonville
Radon is a colorless, odorless gas from soil, and the only way to find it is to test. Greenville County is where testing matters most in South Carolina. The EPA lists it as the state's only Zone 1 county, the category with the highest predicted indoor levels.
The state's radon program has county numbers to match. Through June 2022, Greenville County's 5,220 initial home tests averaged 3.4 pCi/L, with a high of 126.6. That average sits just under the EPA's 4 pCi/L action level and well above the roughly 1.3 pCi/L national average.
Results between 2 and 4 are a gray area the EPA says is worth considering. If yours lands there, our guide to 2–4 pCi/L results walks through the options.
New subdivisions and the homes around them
Simpsonville grew from about 23,400 residents in 2020 to an estimated 28,500, and more than 950 new homes were initially approved in 2022 alone. The median home value is about $299,300. About 14 miles from Greenville via I-385, it has a lot of homeowners settling into recently built houses.
Greenville County is the only SC county whose residential code requires radon-control methods in new homes. In practice that often means a passive vent pipe from under the foundation. Passive pipes help, but they rely on natural airflow. If a test still shows elevated radon, adding an inline fan often turns that pipe into an active system.
Older Simpsonville homes are a different job. Slab homes usually get sub-slab depressurization, crawl space homes get a sealed membrane with suction, and mixed foundations get a combination system.
Simpsonville radon services
Clear written quotes, tidy installs and a post-install test on every system.
New construction radon
Checking and activating radon-control pipes in newer homes.
New-build helpSub-slab depressurization
Typical range $900–$2,500 for slab or basement homes.
Sub-slab systemsCrawl space radon mitigation
Typical range $1,500–$3,500 for membrane systems.
Crawl space systemsFree radon estimates in Simpsonville
Tell us your foundation type, home size and any test results. We usually reply the same day, and your final price comes after a quick on-site look.
Simpsonville radon questions
My Simpsonville home is brand new. Do I still need to test?
Yes. Greenville County's code calls for radon-control methods in new homes, but a passive pipe isn't a promise of low levels. The EPA recommends testing every home. Test once you've moved in and the house is lived in normally. If the result is 4 pCi/L or higher, activating the existing pipe with a fan is often the simplest fix.
How much does radon mitigation cost in Simpsonville?
As a typical estimate, sub-slab systems run $900–$2,500, crawl space membrane systems $1,500–$3,500, and combination foundations $2,200–$3,800. Activating an existing passive pipe can fall at the lower end. Your price depends on foundation, size and pipe routing, and we confirm it in writing after seeing the home.
Will a radon fan raise my electric bill much?
Radon fans run around the clock but use modest power. Expect roughly $30–$300 per year in electricity, with most homes toward the lower end. Fans typically last five to ten years before replacement. We help you pick a fan sized for your home so it isn't working harder than it needs to.
Nearby service areas
We also work in these communities near Simpsonville.
Know your number. Fix it if it's high.
Free radon mitigation quotes across the Upstate — usually a same-day reply.