Macomb County, MI Shrink-Swell Risk

Shrink-swell potential in Macomb County, MI

Low

Soil across 64.1% of Macomb County, MI comes back "Low" in USDA's shrink-swell data, averaging 2.34% linear extensibility. That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Macomb 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 Macomb County will actually do.

Macomb County: the real numbers

Macomb 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.

Macomb County's rank among Michigan counties

Among the 3,085 rated counties on this site, Macomb County, MI ranks 1,694 most-constrained nationally, and 7 of 83 within Michigan. The county spans 479 square miles, home to 886,175 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Lake County, IL and Henderson County, NC 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 Van Buren County, MI and Calhoun County, MI. The full underlying dataset is downloadable directly, one row per county.