White County, AR Shrink-Swell Risk
What White County, AR's soil means for a foundation
Low
USDA's SSURGO data puts White County, AR's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.67% across 79.6% 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 White County, AR at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in White County will actually do.
Report cost vs. repair cost
With White County, AR 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.
White County's rank among Arkansas counties
Nationally, White County, AR is the 1,435-most-constrained of 3,085 rated counties for shrink-swell soil. Within Arkansas alone it ranks 41 of 75. White County covers 1,034 square miles and counts 79,091 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Newton County, TX and Lee 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 Arkansas
Every county in Arkansas is on this site, including Crawford County, AR and Howard County, AR. The full underlying dataset is downloadable directly, one row per county.