Currituck County, NC Shrink-Swell Risk
Currituck County's SSURGO shrink-swell reading
Low
In Currituck County, NC, 81% of the surveyed soil carries a "Low" shrink-swell rating, 2% 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
Currituck County's reading is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).
Budgeting for Currituck County, NC
Currituck 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.
Where this sits nationally
Among the 3,085 rated counties on this site, Currituck County, NC ranks 1,985 most-constrained nationally, and 36 of 100 within North Carolina. Currituck County, NC is 262 square miles with a population of 32,278.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Marengo County, AL and Llano County, TX 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 North Carolina
Every county in North Carolina is on this site, including Richmond County, NC and Lincoln County, NC. The full underlying dataset is downloadable directly, one row per county.