2026-05-12 · 5 min read
Radon Mitigation Cost in Michigan (2026)
Michigan averages 4.3 pCi/L with significant variation across the Upper and Lower peninsulas. Here's what mitigation costs in Detroit, Grand Rapids, and beyond.
Michigan Radon at a Glance
Michigan averages 4.3 pCi/L statewide, just above the EPA action level. The Michigan Department of Health and Human Services (MDHHS) estimates approximately 30% of Michigan homes test above 4 pCi/L.
The Lower Peninsula's southwest counties — particularly Berrien, Cass, and St. Joseph — over glaciated outwash plains test the highest. The Detroit metro suburbs (Oakland, Macomb, Livingston, Washtenaw) also run above average. The Upper Peninsula has lower average levels but significant local variation over bedrock geology.
What Mitigation Costs in Michigan
Michigan is a mid-priced Midwest market.
Slab or Basement: $800–$1,900
- Standard slab, Grand Rapids: $850–$1,400
- Finished basement, Detroit suburbs: $1,000–$1,800
- Ann Arbor metro: $950–$1,700
- Upper Peninsula: $900–$1,800 (fewer contractors, pricing varies)
Crawl Space: $2,500–$5,500
Michigan has significant crawl space housing stock, especially in rural areas and older small-town housing:
- Basic crawl space: $2,500–$3,500
- With vapor barrier: $3,000–$4,800
- Upper Peninsula, remote access: $3,500–$5,500
Michigan Upper Peninsula Note
The UP has fewer certified mitigators. If you're in Marquette, Houghton, or Keweenaw, scheduling may be longer (3–5 weeks) and quotes may reflect reduced competition. Some contractors from downstate take UP work periodically.
Michigan Resources
- MDHHS Radon Program: michigan.gov/mdhhs or 800-723-6642
- Radon information: michigan.gov/radon
- Verify NRPP: radonproficiency.org
Frequently Asked Questions
How much does radon mitigation cost in Michigan?
Michigan homeowners typically pay $800–$1,900 for a standard slab or basement job. Detroit and Grand Rapids are competitive markets; Upper Peninsula contractors may be harder to find. Crawl spaces run $2,500–$5,500.
Which Michigan counties have the highest radon?
The highest-testing counties in the Lower Peninsula include Berrien, Cass, St. Joseph, and Branch in the southwest — over glaciated outwash with uranium-bearing material. Livingston, Washtenaw (Ann Arbor), and Oakland counties (Detroit suburbs) also test above average.
Does Michigan require a licensed radon contractor?
Michigan does not require state licensing for radon mitigators. The Michigan Department of Health and Human Services (MDHHS) recommends NRPP or NRSB certified contractors. Without licensing, NRPP/NRSB certification is the primary quality indicator.
Is radon a concern in Detroit and the suburbs?
Yes. Oakland and Macomb counties (northern Detroit suburbs) test above average for Michigan — many homes in Troy, Royal Oak, Sterling Heights, and Macomb Township have tested above 4 pCi/L. Older homes with basements throughout the Detroit metro are at meaningful risk.
Find a Certified Mitigator Near You
Every contractor on RadonBase is NRPP or NRSB certified — mitigators only, no testers.
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