Duncan, OK Radon Mitigation and Testing

Q: What EPA Radon Zone is Duncan in?

Duncan is in Stephens County, EPA Zone 3.

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.

Stephens County

EPA Zone 3

Positioned in south-central Oklahoma's Stephens County, Duncan lies within EPA Zone 3 for radon classification. While testing data for zip code 73533 remains sparse, the area's sedimentary geology and oil field history typically result in moderate radon levels. Homeowners should test their properties to determine specific conditions given the region's variable geological formations.

Duncan, OK Radon Mitigation

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

Duncan, OK 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 73533 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Stephens County, OK

Zip Code

73533

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Duncan and the 73533 zip code are located in Stephens 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 Duncan, OK

What EPA Radon Zone is Duncan in?

Duncan and the 73533 zip code are in Stephens 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 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 Oklahoma

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

City	Avg User Radon Level	Submissions
Tulsa	8.14 pCi/L	7
Oklahoma City	7.00 pCi/L	1
Edmond	5.00 pCi/L	1