Fenwick Island, DE Radon Mitigation and Testing

Q: What EPA Radon Zone is Fenwick Island in?

Fenwick Island is in Sussex County, EPA Zone 3.

Q: How much does radon mitigation cost in Fenwick Island?

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

Sussex County

EPA Zone 3

Coastal Fenwick Island in Sussex County sits on barrier island sands where radon levels are typically lower than Delaware's inland areas. However, testing data remains limited for this beach community, and seasonal occupancy patterns may affect radon accumulation. Homeowners should consider testing, especially in year-round residences with enclosed crawl spaces or lower-level living areas common in coastal construction.

Fenwick Island, DE Radon Mitigation

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

Fenwick Island, DE Radon Testing

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

Fenwick Island Radon Facts

Key details about the radon risk profile for Fenwick Island and the 19944 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Sussex County, DE

Zip Code

19944

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Fenwick Island and the 19944 zip code are located in Sussex 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 Fenwick Island, DE

What EPA Radon Zone is Fenwick Island in?

Fenwick Island and the 19944 zip code are in Sussex 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 Fenwick Island?

Radon mitigation in Fenwick 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 Fenwick 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 Delaware

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

City	Avg User Radon Level	Submissions
Middletown	7.43 pCi/L	7
Wilmington	5.50 pCi/L	4
Lewes	6.00 pCi/L	1
New Castle	4.00 pCi/L	1
Newark	No submissions	0