Sublette County, WY Shrink-Swell Risk
What Sublette County, WY's soil means for a foundation
Low
USDA's SSURGO data puts Sublette County, WY's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.5% across 75.2% of the county's surveyed land. 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.
This is a county figure, not a lot figure
USDA's survey covers the whole of Sublette County, WY at once, not any single address. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
Report cost vs. repair cost
With Sublette County, WY 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.
Sublette County's rank among Wyoming counties
Nationally, Sublette County, WY is the 1,566-most-constrained of 3,085 rated counties for shrink-swell soil. Within Wyoming alone it ranks 14 of 23. Sublette County, WY is 4,886 square miles with a population of 8,965.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Monroe County, MS and Upson County, GA 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 Wyoming
Every county in Wyoming is on this site, including Park County, WY and Teton County, WY. The full underlying dataset is downloadable directly, one row per county.