Madison County, TN Shrink-Swell Risk

Madison County's SSURGO shrink-swell reading

Low

In Madison County, TN, 99.1% of the surveyed soil carries a "Low" shrink-swell rating, 1.53% 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

Madison County's reading is an average across the whole county, not a promise about any one lot inside it. 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 Madison County.

Budgeting for Madison County, TN

Madison 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.

How Madison County, TN compares

Among the 3,085 rated counties on this site, Madison County, TN ranks 2,461 most-constrained nationally, and 76 of 95 within Tennessee. Madison County, TN is 557 square miles with a population of 100,409.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Jackson County, MO and Mora County, NM 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 Wilson County, TN and Davidson County, TN. The full underlying dataset is downloadable directly, one row per county.