Idaho County, ID Shrink-Swell Risk

Idaho County, ID's soil, for shrink-swell risk

Low

Idaho County, ID: USDA's soil survey rates 81.6% of the county "Low" for shrink-swell potential (1.95% linear extensibility). That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What Idaho County's reading doesn't cover

Two lots a mile apart in Idaho 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 Idaho County, ID 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 Idaho County, ID compares

Nationally, Idaho County, ID is the 2,034-most-constrained of 3,085 rated counties for shrink-swell soil. Within Idaho alone it ranks 25 of 44. Idaho County covers 8,477 square miles and counts 17,912 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. DeWitt County, TX and Calloway County, KY 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 Idaho

Every county in Idaho is on this site, including Nez Perce County, ID and Benewah County, ID. The full underlying dataset is downloadable directly, one row per county.