Hilton Head Island, SC Radon Mitigation and Testing

Q: What EPA Radon Zone is Hilton Head Island in?

Hilton Head Island is in Beaufort County, EPA Zone 3.

Q: How much does radon mitigation cost in Hilton Head Island?

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

Beaufort County

EPA Zone 3

Located in Beaufort County within the Hilton Head Island Metro area, this barrier island community sits on coastal plain sediments and sandy soils that typically produce lower radon levels. Testing data for zip code 29926 is currently limited, but the island's geological setting and slab-on-grade construction generally result in minimal radon concerns.

Hilton Head Island, SC Radon Mitigation

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

Hilton Head Island, SC Radon Testing

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

Hilton Head Island Radon Facts

Key details about the radon risk profile for Hilton Head Island and the 29926 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Beaufort County, SC

Zip Code

29926

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Hilton Head Island and the 29926 zip code are located in Beaufort 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 Hilton Head Island, SC

What EPA Radon Zone is Hilton Head Island in?

Hilton Head Island and the 29926 zip code are in Beaufort 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 Hilton Head Island?

Radon mitigation in Hilton Head Island 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 Hilton Head Island?

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