Brantley County, GA Shrink-Swell Risk
Shrink-swell potential in Brantley County, GA
Low
Soil across 99.4% of Brantley County, GA comes back "Low" in USDA's shrink-swell data, averaging 0.87% linear extensibility. 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.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Brantley County, GA - never a reading for one specific parcel. 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 Brantley County.
Brantley County: the real numbers
Brantley 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, Brantley County, GA ranks 2,953 most-constrained nationally, and 150 of 159 within Georgia. Brantley County covers 443 square miles and counts 18,795 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Grainger County, TN and Menominee 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
Elsewhere in Georgia
Every county in Georgia is on this site, including Berrien County, GA and Whitfield County, GA. The full underlying dataset is downloadable directly, one row per county.