Glynn County, GA Shrink-Swell Risk

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

Moderate

USDA's SSURGO data puts Glynn County, GA's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.18% across 53.9% of the county's surveyed land. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

This is a county figure, not a lot figure

USDA's survey covers the whole of Glynn 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 Glynn County.

Report cost vs. repair cost

With Glynn County, GA 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.

Glynn County's rank among Georgia counties

Nationally, Glynn County, GA is the 1,060-most-constrained of 3,085 rated counties for shrink-swell soil. Within Georgia alone it ranks 2 of 159. Glynn County, GA is 420 square miles with a population of 86,540.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Clinton County, IA and Clark County, WI 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 Upson County, GA and Marion County, GA. The full underlying dataset is downloadable directly, one row per county.