North Charleston, SC Radon Mitigation and Testing

Q: What EPA Radon Zone is North Charleston in?

North Charleston is in Charleston County, EPA Zone 3.

Q: How much does radon mitigation cost in North Charleston?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Charleston County

EPA Zone 3

North Charleston, SC resides 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. Testing is recommended for all homes in the 29405 zip code area.

North Charleston, SC Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

North Charleston, SC Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

North Charleston Radon Facts

Key details about the radon risk profile for North Charleston and the 29405 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Charleston County, SC

Zip Code

29405

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

North Charleston and the 29405 zip code are located in Charleston County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

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 with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Fort Mill	6.00 pCi/L	1
Greenville	5.00 pCi/L	1