Chelsea, MA Radon Mitigation and Testing

Q: What EPA Radon Zone is Chelsea in?

Chelsea is in Suffolk County, EPA Zone 3.

Q: How much does radon mitigation cost in Chelsea?

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

Suffolk County

EPA Zone 3

This densely populated Suffolk County community within the Boston Metro area currently lacks comprehensive radon testing data for zip code 02150. Chelsea's urban setting with predominantly older housing stock and varied foundation types creates uncertain radon conditions. Professional testing remains essential for residents, particularly those in basement apartments or older buildings where radon accumulation is more likely.

Chelsea, MA Radon Mitigation

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

Chelsea, MA Radon Testing

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

Chelsea Radon Facts

Key details about the radon risk profile for Chelsea and the 02150 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Suffolk County, MA

Zip Code

02150

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Chelsea and the 02150 zip code are located in Suffolk 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 Chelsea, MA

What EPA Radon Zone is Chelsea in?

Chelsea and the 02150 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 Chelsea?

Radon mitigation in Chelsea 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 Chelsea?

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 Massachusetts

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

City	Avg User Radon Level	Submissions
Littleton	9.40 pCi/L	5
Gloucester	8.40 pCi/L	5
Florence	7.40 pCi/L	5
Douglas	12.00 pCi/L	4
Weymouth	8.50 pCi/L	4
Mashpee	5.00 pCi/L	4
Natick	5.00 pCi/L	4
Worcester	17.67 pCi/L	3
Attleboro	10.00 pCi/L	3
Stoneham	9.67 pCi/L	3
Hopkinton	9.33 pCi/L	3
Medford	8.00 pCi/L	3
Boxford	6.67 pCi/L	3
Reading	5.67 pCi/L	3
Haverhill	5.00 pCi/L	3
Melrose	5.00 pCi/L	3
Somerville	4.33 pCi/L	3
Woburn	19.00 pCi/L	2
Marlborough	13.50 pCi/L	2
Cohasset	11.50 pCi/L	2