Brooklyn, NY Radon Mitigation and Testing

Q: What is the average radon level in Brooklyn, NY?

Based on 5 user-submitted tests, the average radon level is 10.80 pCi/L.

Q: What EPA Radon Zone is Brooklyn in?

Brooklyn is in Kings County, EPA Zone 3.

Q: How much does radon mitigation cost in Brooklyn?

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

Avg: 10.80 pCi/L

Kings County

EPA Zone 3

5 user tests

New York City's most populous borough in Kings County shows an average radon level of 10.8 pCi/L based on testing data, significantly exceeding the EPA's 4.0 pCi/L action threshold. The borough's dense urban environment over glacial deposits and bedrock creates variable radon conditions, with readings ranging from 2.0 to 20.0 pCi/L across different neighborhoods in zip code 11201. Given these elevated and variable readings, all Brooklyn residents should test their properties regardless of building age or type.

10.80

pCi/L average

Above EPA Action Level

Based on 5 user-submitted radon tests for homes in Brooklyn, NY. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Brooklyn, NY Radon Mitigation

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

Brooklyn, NY Radon Testing

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

Brooklyn, New York Radon Levels

User-submitted radon test readings from homes in the Brooklyn area.

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Brooklyn, NY	100+ Years	—	Jan 2024
2 pCi/L	Brooklyn, NY	100+ Years	Full Basement	Jan 2023
16 pCi/L	Brooklyn, NY	21-50 Years	Full Basement	Feb 2021
20 pCi/L	Brooklyn, NY	0-20 Years	Full Basement	Feb 2019
12 pCi/L	Brooklyn , NY	51-99 Years	Full Basement	Mar 2016

Have a radon test result for Brooklyn? Submit your reading to help other homeowners.

Brooklyn Radon Facts

Key details about the radon risk profile for Brooklyn and the 11201 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Kings County, NY

Zip Code

11201

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

10.80 pCi/L

User Tests Submitted

Brooklyn and the 11201 zip code are located in Kings 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 Brooklyn, NY

What is the average radon level in Brooklyn, NY?

Based on 5 user-submitted tests, the average radon level in Brooklyn is 10.80 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Brooklyn in?

Brooklyn and the 11201 zip code are in Kings 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 Brooklyn?

Radon mitigation in Brooklyn 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 Brooklyn?

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