Coffee County, TN Shrink-Swell Risk

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

Low

Coffee County, TN: USDA's soil survey rates 84.1% of the county "Low" for shrink-swell potential (1.8% 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 Coffee County's reading doesn't cover

Two lots a mile apart in Coffee 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 Coffee County.

What it costs to find out, versus to ignore it

With Coffee 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.

Coffee County's rank among Tennessee counties

Nationally, Coffee County, TN is the 2,170-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 59 of 95. The county spans 429 square miles, home to 61,285 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Trousdale County, TN and Hudspeth County, TX 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 McNairy County, TN and Morgan County, TN. The full underlying dataset is downloadable directly, one row per county.