Roane County, TN Shrink-Swell Risk

Roane County's SSURGO shrink-swell reading

Low

In Roane County, TN, 74.9% of the surveyed soil carries a "Low" shrink-swell rating, 2.41% linear extensibility on average. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

Before you rely on this for one address

Roane County's reading is an average across the whole county, not a promise about any one lot inside it. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Roane County will actually do.

Budgeting for Roane County, TN

Roane County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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

Among the 3,085 rated counties on this site, Roane County, TN ranks 1,631 most-constrained nationally, and 32 of 95 within Tennessee. The county spans 361 square miles, home to 56,742 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Porter County, IN and Oswego County, NY 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

Elsewhere in Tennessee

Every county in Tennessee is on this site, including Moore County, TN and Jackson County, TN. The full underlying dataset is downloadable directly, one row per county.