Sevier County, TN Shrink-Swell Risk

What Sevier County, TN's soil means for a foundation

Low

USDA's SSURGO data puts Sevier County, TN's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.28% across 65.5% 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 Sevier County, TN 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 Sevier County.

Report cost vs. repair cost

With Sevier County, TN 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.

How Sevier County, TN compares

Nationally, Sevier County, TN is the 1,737-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 35 of 95. Sevier County, TN is 593 square miles with a population of 100,184.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Norton County, KS and Columbia County, FL 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 Tennessee

Every county in Tennessee is on this site, including Gibson County, TN and Overton County, TN. The full underlying dataset is downloadable directly, one row per county.