Southfield, MI Radon Levels

Q: What EPA Radon Zone is Southfield in?

Southfield is in Oakland County, EPA Zone 2.

Q: How much does radon mitigation cost in Southfield?

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

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

Southfield, MI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Oakland County, MI

Zip Code 48033

This Oakland County suburb in the Detroit Metro area features predominantly postwar housing with full basements built over glacial deposits and limestone bedrock. While comprehensive radon data for zip codes 48033, 48034, 48075, and 48076 is still being collected, the geological conditions warrant homeowner testing to assess individual property risk levels.

7.30

pCi/L area average

Above EPA Action Level

Oakland County average: 7.30 pCi/L, based on 50 user-submitted tests across 22 cities in the county. No homeowner readings have been submitted for Southfield itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Southfield, MI Radon Mitigation

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

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Radon Readings Near Southfield, MI

No homeowner tests have been submitted for Southfield yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Franklin	2.7 mi	8.00 pCi/L	1
Birmingham	4.7 mi	6.00 pCi/L	1
Bloomfield Hills	6.2 mi	4.00 pCi/L	1
Farmington	6.5 mi	2.00 pCi/L	1
Troy	8.6 mi	3.00 pCi/L	1
West Bloomfield	8.8 mi	5.25 pCi/L	4
Novi	11.8 mi	5.00 pCi/L	7
Warren	12.0 mi	5.67 pCi/L	3

Oakland County Radon Profile

The soils and bedrock of Oakland County place it in EPA Radon Zone 2, a moderate-risk classification with predicted indoor averages of 2 to 4 pCi/L. Homeowner-submitted tests from 22 cities in Oakland County average 7.30 pCi/L across 50 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Oakland County to test, as levels can differ between neighboring homes.

Radon FAQ for Southfield, MI

What EPA Radon Zone is Southfield in?

Southfield and the 48033 zip code are in Oakland County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Southfield?

No homeowner radon tests have been submitted for Southfield yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Oakland County average—are the best available indicator of local conditions until Southfield homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Southfield?

Radon mitigation in Southfield 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 Southfield?

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.