Polk County, GA Shrink-Swell Risk

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

Low

USDA's SSURGO data puts Polk County, GA's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.2% across 82.9% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

This is a county figure, not a lot figure

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

Report cost vs. repair cost

With Polk 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.

Polk County's rank among Georgia counties

Nationally, Polk County, GA is the 1,800-most-constrained of 3,085 rated counties for shrink-swell soil. Within Georgia alone it ranks 14 of 159. Polk County covers 310 square miles and counts 44,610 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Gordon County, GA and Baker County, FL 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 Pulaski County, GA and Liberty County, GA. The full underlying dataset is downloadable directly, one row per county.