Sequatchie County, TN Shrink-Swell Risk

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

Low

USDA's SSURGO data puts Sequatchie County, TN's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.3% across 98.2% of the county's surveyed land. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

This is a county figure, not a lot figure

USDA's survey covers the whole of Sequatchie County, TN at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Sequatchie County will actually do.

Report cost vs. repair cost

With Sequatchie 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.

Sequatchie County's rank among Tennessee counties

Nationally, Sequatchie County, TN is the 2,705-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 89 of 95. Sequatchie County, TN is 266 square miles with a population of 17,620.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Irion County, TX and Lawrence County, PA 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 Henderson County, TN and Lewis County, TN. The full underlying dataset is downloadable directly, one row per county.