Cayce, SC Radon Mitigation and Testing

Q: What EPA Radon Zone is Cayce in?

Cayce is in Lexington County, EPA Zone 3.

Q: How much does radon mitigation cost in Cayce?

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

Lexington County

EPA Zone 3

Cayce, located in Lexington County within the Columbia Metro area, sits on Coastal Plain sediments where radon testing data remains limited. The community's mix of older residential properties and newer developments near the Congaree River presents varying foundation types that could influence indoor air quality. Homeowners in zip code 29033 are encouraged to conduct radon testing to establish baseline readings for their specific properties.

Cayce, SC Radon Mitigation

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

Cayce, SC Radon Testing

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

Cayce Radon Facts

Key details about the radon risk profile for Cayce and the 29033 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Lexington County, SC

Zip Code

29033

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Cayce and the 29033 zip code are located in Lexington 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 Cayce, SC

What EPA Radon Zone is Cayce in?

Cayce and the 29033 zip code are in Lexington 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 Cayce?

Radon mitigation in Cayce 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 Cayce?

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