Freeport, NY Radon Mitigation and Testing

Q: What EPA Radon Zone is Freeport in?

Freeport is in Nassau County, EPA Zone 3.

Q: How much does radon mitigation cost in Freeport?

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

Nassau County

EPA Zone 3

This Long Island community in Nassau County, part of the New York City metro area, sits on coastal plain deposits that typically produce lower radon concentrations. However, specific testing data for zip code 11520 remains limited, and individual homes can still experience elevated readings due to construction factors and local geological variations. Despite the EPA Zone 3 classification, professional radon testing provides valuable peace of mind for Freeport homeowners.

Freeport, NY Radon Mitigation

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

Freeport, NY Radon Testing

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

Freeport Radon Facts

Key details about the radon risk profile for Freeport and the 11520 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Nassau County, NY

Zip Code

11520

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Freeport and the 11520 zip code are located in Nassau 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 Freeport, NY

What EPA Radon Zone is Freeport in?

Freeport and the 11520 zip code are in Nassau 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 Freeport?

Radon mitigation in Freeport 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 Freeport?

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 New York

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

City	Avg User Radon Level	Submissions
Brooklyn	10.80 pCi/L	5
Oneonta	6.50 pCi/L	4
Clifton Park	3.75 pCi/L	4
Elmira	15.00 pCi/L	3
Saugerties	10.67 pCi/L	3
Staten Island	4.00 pCi/L	3
New York	9.00 pCi/L	2
Yonkers	8.00 pCi/L	2
Horseheads	7.50 pCi/L	2
Poughkeepsie	16.00 pCi/L	1
Buffalo	4.00 pCi/L	1
Pelham	3.00 pCi/L	1