Lapeer County, MI Shrink-Swell Risk
Shrink-swell potential in Lapeer County, MI
Low
Soil across 86.5% of Lapeer County, MI comes back "Low" in USDA's shrink-swell data, averaging 1.95% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Lapeer County, MI - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Lapeer County will actually do.
Lapeer County: the real numbers
Lapeer County's soil reading points toward standard foundation practice as the likely outcome, not the exception. A geotechnical report runs $1,000-$5,000, typically around $2,700. Foundation repair, if a specific lot turns out to differ from the county average, runs $5,000-$15,000.
Where this sits nationally
Among the 3,085 rated counties on this site, Lapeer County, MI ranks 2,027 most-constrained nationally, and 16 of 83 within Michigan. Lapeer County covers 647 square miles and counts 89,168 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Brooks County, TX and Henderson County, KY are worth a look for comparison.
How this reading is built, and its real limits · Moisture management: the cheap fix that works on any soil
Elsewhere in Michigan
Every county in Michigan is on this site, including Montmorency County, MI and Missaukee County, MI. The full underlying dataset is downloadable directly, one row per county.