Clark County, NV Shrink-Swell Risk
Clark County's SSURGO shrink-swell reading
Low
In Clark County, NV, 93.6% of the surveyed soil carries a "Low" shrink-swell rating, 1.63% linear extensibility on average. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.
Before you rely on this for one address
Clark County's reading is an average across the whole county, not a promise about any one lot inside it. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Clark County will actually do.
Budgeting for Clark County, NV
Clark County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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.
Clark County's rank among Nevada counties
Among the 3,085 rated counties on this site, Clark County, NV ranks 2,346 most-constrained nationally, and 17 of 17 within Nevada. Clark County, NV is 7,892 square miles with a population of 2,398,871.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Chowan County, NC and Piscataquis County, ME 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
Elsewhere in Nevada
Every county in Nevada is on this site, including Lincoln County, NV and Douglas County, NV. The full underlying dataset is downloadable directly, one row per county.