Guilford, CT Radon Levels

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.

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

Guilford, CT Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County New Haven County, CT

Zip Code 06437

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.

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

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