Blount County, TN Shrink-Swell Risk

Blount County, TN's soil, for shrink-swell risk

Low

Blount County, TN: USDA's soil survey rates 63% of the county "Low" for shrink-swell potential (2.5% linear extensibility). 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.

What Blount County's reading doesn't cover

Two lots a mile apart in Blount County can carry different soil, even though they share one countywide reading. 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 Blount County.

What it costs to find out, versus to ignore it

With Blount 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.

Blount County's rank among Tennessee counties

Nationally, Blount County, TN is the 1,561-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 25 of 95. Blount County, TN is 559 square miles with a population of 142,211.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Jefferson County, OH and Ouachita Parish, LA 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 Lawrence County, TN and Cocke County, TN. The full underlying dataset is downloadable directly, one row per county.