Duncan, SC Radon Mitigation and Testing

Q: What EPA Radon Zone is Duncan in?

Duncan is in Spartanburg County, EPA Zone 2.

Q: How much does radon mitigation cost in Duncan?

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

Spartanburg County

EPA Zone 2

Part of the Spartanburg Metro area in Spartanburg County, Duncan sits within EPA Zone 2 reflecting moderate radon potential from Piedmont geology. Testing data for zip code 29334 is currently unavailable, though the area's granite-based soils and mix of housing types create varied radon conditions. Individual property assessment is recommended for accurate readings.

Duncan, SC Radon Mitigation

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

Duncan, SC Radon Testing

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

Duncan Radon Facts

Key details about the radon risk profile for Duncan and the 29334 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Spartanburg County, SC

Zip Code

29334

Predicted Screening Level

2–4 pCi/L (Zone 2)

Duncan and the 29334 zip code are located in Spartanburg County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Duncan, SC

What EPA Radon Zone is Duncan in?

Duncan and the 29334 zip code are in Spartanburg County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Duncan?

Radon mitigation in Duncan 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 Duncan?

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