Charlton County, GA Shrink-Swell Risk
Shrink-swell potential in Charlton County, GA
Low
Soil across 99.4% of Charlton 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 Charlton 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 Charlton County.
Charlton County: the real numbers
Charlton 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.
Charlton County's rank among Georgia counties
Among the 3,085 rated counties on this site, Charlton County, GA ranks 2,954 most-constrained nationally, and 151 of 159 within Georgia. The county spans 780 square miles, home to 13,021 people.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Baylor County, TX and Custer County, ID 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 Fayette County, GA and Oglethorpe County, GA. The full underlying dataset is downloadable directly, one row per county.