Gilmer County, GA Shrink-Swell Risk

What Gilmer County, GA's soil means for a foundation

Low

USDA's SSURGO data puts Gilmer County, GA's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.57% across 97.2% of the county's surveyed land. 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.

This is a county figure, not a lot figure

USDA's survey covers the whole of Gilmer County, GA at once, not any single address. 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 Gilmer County.

Report cost vs. repair cost

With Gilmer County, GA 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.

Where this sits nationally

Nationally, Gilmer County, GA is the 2,417-most-constrained of 3,085 rated counties for shrink-swell soil. Within Georgia alone it ranks 64 of 159. Gilmer County covers 426 square miles and counts 33,327 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Guilford County, NC and Morgan 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 Georgia

Every county in Georgia is on this site, including Jefferson County, GA and Lowndes County, GA. The full underlying dataset is downloadable directly, one row per county.