Randolph County, MO Shrink-Swell Risk

What Randolph County, MO's soil means for a foundation

Moderate

USDA's SSURGO data puts Randolph County, MO's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 5.96% across 51.6% of the county's surveyed land. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

This is a county figure, not a lot figure

USDA's survey covers the whole of Randolph County, MO at once, not any single address. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Randolph County.

Report cost vs. repair cost

With Randolph County, MO rating "Moderate", 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.

How Randolph County, MO compares

Nationally, Randolph County, MO is the 136-most-constrained of 3,085 rated counties for shrink-swell soil. Within Missouri alone it ranks 17 of 114. The county spans 483 square miles, home to 24,077 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Webster County, MO and Chugach Census Area, AK 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 Missouri

Every county in Missouri is on this site, including Ray County, MO and Andrew County, MO. The full underlying dataset is downloadable directly, one row per county.