Harnett County, NC Shrink-Swell Risk

Harnett County's SSURGO shrink-swell reading

Low

In Harnett County, NC, 98% of the surveyed soil carries a "Low" shrink-swell rating, 1.43% linear extensibility on average. 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.

Before you rely on this for one address

Harnett County's reading is an average across the whole county, not a promise about any one lot inside it. 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 Harnett County.

Budgeting for Harnett County, NC

Harnett 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.

How Harnett County, NC compares

Among the 3,085 rated counties on this site, Harnett County, NC ranks 2,582 most-constrained nationally, and 81 of 100 within North Carolina. Harnett County, NC is 595 square miles with a population of 146,096.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Torrance County, NM and Lawrence County, MO 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 Sampson County, NC and Pitt County, NC. The full underlying dataset is downloadable directly, one row per county.