Hamilton County, TN Shrink-Swell Risk

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

Low

Hamilton County, TN: USDA's soil survey rates 68.7% of the county "Low" for shrink-swell potential (2.47% 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 Hamilton County's reading doesn't cover

Two lots a mile apart in Hamilton County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

What it costs to find out, versus to ignore it

With Hamilton 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.

Hamilton County's rank among Tennessee counties

Nationally, Hamilton County, TN is the 1,582-most-constrained of 3,085 rated counties for shrink-swell soil. Within Tennessee alone it ranks 27 of 95. Hamilton County, TN is 542 square miles with a population of 386,256.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Juab County, UT and Cheyenne County, CO 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 Jackson County, TN and Moore County, TN. The full underlying dataset is downloadable directly, one row per county.