Seminole County, GA Shrink-Swell Risk
Seminole County, GA's soil, for shrink-swell risk
Low
Seminole County, GA: USDA's soil survey rates 83.2% of the county "Low" for shrink-swell potential (1.37% 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 Seminole County's reading doesn't cover
Two lots a mile apart in Seminole 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 Seminole 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.
Where this sits nationally
Nationally, Seminole County, GA is the 2,646-most-constrained of 3,085 rated counties for shrink-swell soil. Within Georgia alone it ranks 102 of 159. Seminole County, GA is 238 square miles with a population of 9,274.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Outagamie County, WI and Brooks 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 Irwin County, GA and Jones County, GA. The full underlying dataset is downloadable directly, one row per county.