Clifton, VA Radon Mitigation and Testing

Q: What EPA Radon Zone is Clifton in?

Clifton is in Fairfax County, EPA Zone 1.

Q: How much does radon mitigation cost in Clifton?

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

Fairfax County

EPA Zone 1

A planned community within Fairfax County in the Washington Metro area, Clifton features upscale residential developments built primarily from the 1980s onward on the rolling Piedmont terrain. The area's crystalline bedrock and residual soils, combined with predominantly full basement construction, create conditions where radon levels can vary significantly from home to home. Without local testing data available for zip code 20124, homeowners should test their properties to determine individual radon exposure levels.

Clifton, VA Radon Mitigation

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

Clifton, VA Radon Testing

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

Clifton Radon Facts

Key details about the radon risk profile for Clifton and the 20124 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Fairfax County, VA

Zip Code

20124

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Clifton and the 20124 zip code are located in Fairfax County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Clifton, VA

What EPA Radon Zone is Clifton in?

Clifton and the 20124 zip code are in Fairfax County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Clifton?

Radon mitigation in Clifton 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 Clifton?

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 Virginia

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

City	Avg User Radon Level	Submissions
Fredericksburg	7.29 pCi/L	7
King George	7.17 pCi/L	6
Leesburg	9.80 pCi/L	5
Chantilly	9.60 pCi/L	5
Fancy Gap	9.40 pCi/L	5
Purcellville	10.75 pCi/L	4
Aldie	8.00 pCi/L	4
Front Royal	7.75 pCi/L	4
Bristol	7.50 pCi/L	4
Winchester	7.00 pCi/L	4
Williamsburg	5.75 pCi/L	4
Lovettsville	5.25 pCi/L	4
Woodbridge	4.50 pCi/L	4
Fairfax	9.67 pCi/L	3
Stafford	9.33 pCi/L	3
Louisa	8.33 pCi/L	3
Linden	7.67 pCi/L	3
Warrenton	7.67 pCi/L	3
Burke	5.67 pCi/L	3
Lynchburg	5.33 pCi/L	3