Somerset County, NJ Shrink-Swell Risk

Somerset County, NJ's soil, for shrink-swell risk

Low

Somerset County, NJ: USDA's soil survey rates 87.1% of the county "Low" for shrink-swell potential (1.84% linear extensibility). 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.

What Somerset County's reading doesn't cover

Two lots a mile apart in Somerset County can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Somerset County will actually do.

What it costs to find out, versus to ignore it

With Somerset County, NJ 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.

How Somerset County, NJ compares

Nationally, Somerset County, NJ is the 2,127-most-constrained of 3,085 rated counties for shrink-swell soil. Within New Jersey alone it ranks 1 of 21. Somerset County covers 302 square miles and counts 357,467 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Hot Spring County, AR and Fayette 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 New Jersey

Every county in New Jersey is on this site, including Monmouth County, NJ and Passaic County, NJ. The full underlying dataset is downloadable directly, one row per county.