Nez Perce County, ID Shrink-Swell Risk

What Nez Perce County, ID's soil means for a foundation

Low

USDA's SSURGO data puts Nez Perce County, ID's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.04% across 85.3% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

This is a county figure, not a lot figure

USDA's survey covers the whole of Nez Perce County, ID at once, not any single address. 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 Nez Perce County.

Report cost vs. repair cost

With Nez Perce 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 Nez Perce County, ID compares

Nationally, Nez Perce County, ID is the 1,948-most-constrained of 3,085 rated counties for shrink-swell soil. Within Idaho alone it ranks 23 of 44. Nez Perce County, ID is 848 square miles with a population of 42,847.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Sevier County, AR and Talbot 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 Idaho

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