Stony Brook, NY Radon Levels

Q: What EPA Radon Zone is Stony Brook in?

Stony Brook is in Suffolk County, EPA Zone 3.

Q: How much does radon mitigation cost in Stony Brook?

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

Check local Stony Brook radon levels and find certified testing and mitigation professionals to keep your home safe

Stony Brook, NY Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Suffolk County, NY

Zip Code 11790

Located in Suffolk County on Long Island's North Shore within the New York City Metro area, Stony Brook features a mix of university housing and suburban developments on glacial deposits. Limited radon testing data for zip code 11790 makes individual home assessment important for residents. Long Island's glacial geology and diverse housing stock create variable radon conditions requiring property-specific testing.

Stony Brook, NY Radon Mitigation

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

Need Radon Mitigation or Testing in Stony Brook?

100% Free, No-Obligation Quotes
Matches You with State-Licensed Suffolk County Pros

1-800-299-3578 Toll-free · Mon–Fri 8am–6pm ET

Radon FAQ for Stony Brook, NY

What EPA Radon Zone is Stony Brook in?

Stony Brook and the 11790 zip code are in Suffolk 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 Stony Brook?

Radon mitigation in Stony Brook 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 Stony Brook?

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 in New York with the most user-submitted radon test data, ranked by number of submissions.

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