Cabarrus County, NC Shrink-Swell Risk
Cabarrus County, NC's soil, for shrink-swell risk
Moderate
Cabarrus County, NC: USDA's soil survey rates 56.5% of the county "Moderate" for shrink-swell potential (3.12% linear extensibility). A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.
What Cabarrus County's reading doesn't cover
Two lots a mile apart in Cabarrus County can carry different soil, even though they share one countywide reading. 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 Cabarrus County.
What it costs to find out, versus to ignore it
With Cabarrus County, NC rating "Moderate", 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 Cabarrus County, NC compares
Nationally, Cabarrus County, NC is the 1,097-most-constrained of 3,085 rated counties for shrink-swell soil. Within North Carolina alone it ranks 7 of 100. Cabarrus County, NC is 361 square miles with a population of 244,925.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Essex County, NJ and Decatur County, IN 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 Swain County, NC and Catawba County, NC. The full underlying dataset is downloadable directly, one row per county.