Guilford, CT Radon Mitigation and Testing

Q: What EPA Radon Zone is Guilford in?

Guilford is in New Haven County, EPA Zone 1.

Q: How much does radon mitigation cost in Guilford?

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

New Haven County

EPA Zone 1

Established along Connecticut's shoreline in New Haven County, Guilford combines historic village charm with modern coastal living on glacial deposits over bedrock typical of southern New England. The town's housing ranges from 17th-century colonials to contemporary waterfront homes, many featuring full basements or crawl spaces. Since radon testing data for zip code 06444 is currently limited, residents should consider testing given the area's complex glacial geology and varied foundation types that can influence radon levels.

Guilford, CT Radon Mitigation

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

Guilford, CT Radon Testing

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

Guilford Radon Facts

Key details about the radon risk profile for Guilford and the 06437 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

New Haven County, CT

Zip Code

06437

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Guilford and the 06437 zip code are located in New Haven County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Guilford, CT

What EPA Radon Zone is Guilford in?

Guilford and the 06437 zip code are in New Haven County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Guilford?

Radon mitigation in Guilford 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 Guilford?

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 Connecticut

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

City	Avg User Radon Level	Submissions
Hamden	4.75 pCi/L	4
West Hartford	4.25 pCi/L	4
Greenwich	7.67 pCi/L	3
Norwalk	7.00 pCi/L	1
Stamford	5.00 pCi/L	1
Middletown	4.00 pCi/L	1
Guilford	No submissions	0
Ridgefield	No submissions	0