Gratiot County, MI Shrink-Swell Risk

What Gratiot County, MI's soil means for a foundation

Low

USDA's SSURGO data puts Gratiot County, MI's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.28% across 70.4% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

This is a county figure, not a lot figure

USDA's survey covers the whole of Gratiot County, MI at once, not any single address. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Report cost vs. repair cost

With Gratiot County, MI rating "Low", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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

Nationally, Gratiot County, MI is the 1,738-most-constrained of 3,085 rated counties for shrink-swell soil. Within Michigan alone it ranks 9 of 83. The county spans 568 square miles, home to 41,372 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Casey County, KY and Dent County, MO 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

More of Michigan

Every county in Michigan is on this site, including Missaukee County, MI and Montmorency County, MI. The full underlying dataset is downloadable directly, one row per county.