Warren County, NC Shrink-Swell Risk

What Warren County, NC's soil means for a foundation

Low

USDA's SSURGO data puts Warren County, NC's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.89% across 93% 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 Warren County, NC 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 Warren County will actually do.

Report cost vs. repair cost

With Warren County, NC 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.

Warren County's rank among North Carolina counties

Nationally, Warren County, NC is the 2,087-most-constrained of 3,085 rated counties for shrink-swell soil. Within North Carolina alone it ranks 41 of 100. Warren County, NC is 429 square miles with a population of 19,081.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Sebastian County, AR and Bourbon 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 North Carolina

Every county in North Carolina is on this site, including Bertie County, NC and Montgomery County, NC. The full underlying dataset is downloadable directly, one row per county.