North Charleston, SC Radon Levels
Check local North Charleston radon levels and find certified testing and mitigation professionals to keep your home safe
North Charleston, SC Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Charleston County, SC
Zip Code
29405
Spanning multiple zip codes in Charleston County and extending into Dorchester County, North Charleston sits on Atlantic Coastal Plain sediments. Testing data remains limited across the city's various neighborhoods, making radon assessment worthwhile for homeowners. The area's mix of slab-on-grade and crawl space construction, typical of Lowcountry architecture, requires specialized evaluation approaches for radon detection.
North Charleston, SC Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
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Radon FAQ for North Charleston, SC
What EPA Radon Zone is North Charleston in?
North Charleston and the 29405 zip code are in Charleston County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.
How much does radon mitigation cost in North Charleston?
Radon mitigation in North Charleston typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in North Charleston?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.
Most Active Radon Markets in South Carolina
Cities in South Carolina with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Fort Mill | 6.00 pCi/L | 1 |
| Greenville | 5.00 pCi/L | 1 |