Fannin County, GA Shrink-Swell Risk
Fannin County, GA's soil, for shrink-swell risk
Low
Fannin County, GA: USDA's soil survey rates 100% of the county "Low" for shrink-swell potential (1.3% 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 Fannin County's reading doesn't cover
Two lots a mile apart in Fannin County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
What it costs to find out, versus to ignore it
With Fannin 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.
How Fannin County, GA compares
Nationally, Fannin County, GA is the 2,702-most-constrained of 3,085 rated counties for shrink-swell soil. Within Georgia alone it ranks 109 of 159. Fannin County, GA is 387 square miles with a population of 25,854.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Prowers County, CO and Robertson County, TX 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 DeKalb County, GA and Rabun County, GA. The full underlying dataset is downloadable directly, one row per county.