Yancey County, NC Shrink-Swell Risk

What Yancey County, NC's soil means for a foundation

Low

USDA's SSURGO data puts Yancey County, NC's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.54% across 93.2% of the county's surveyed land. 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.

This is a county figure, not a lot figure

USDA's survey covers the whole of Yancey County, NC 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 Yancey County.

Report cost vs. repair cost

With Yancey County, NC 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, Yancey County, NC is the 2,451-most-constrained of 3,085 rated counties for shrink-swell soil. Within North Carolina alone it ranks 67 of 100. Yancey County covers 313 square miles and counts 18,993 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Forest County, PA and Sanborn County, SD 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 North Carolina

Every county in North Carolina is on this site, including Lee County, NC and Lincoln County, NC. The full underlying dataset is downloadable directly, one row per county.