Wilson County, TN Shrink-Swell Risk

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

Moderate

Wilson County, TN: USDA's soil survey rates 56% of the county "Moderate" for shrink-swell potential (3.75% linear extensibility). A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

What Wilson County's reading doesn't cover

Two lots a mile apart in Wilson 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 Wilson County.

What it costs to find out, versus to ignore it

With Wilson County, TN rating "Moderate", 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, Wilson County, TN is the 699-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 6 of 95. The county spans 571 square miles, home to 169,948 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Swift County, MN and Bourbon County, KY 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 Hamblen County, TN and Dickson County, TN. The full underlying dataset is downloadable directly, one row per county.