Essex County, NJ Shrink-Swell Risk

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

Low

Essex County, NJ: USDA's soil survey rates 92.5% of the county "Low" for shrink-swell potential (1.42% linear extensibility). Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

What Essex County's reading doesn't cover

Two lots a mile apart in Essex 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 Essex County will actually do.

What it costs to find out, versus to ignore it

With Essex 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.

Where this sits nationally

Nationally, Essex County, NJ is the 2,590-most-constrained of 3,085 rated counties for shrink-swell soil. Within New Jersey alone it ranks 10 of 21. Essex County covers 126 square miles and counts 881,527 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Grundy County, IL is 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 Union County, NJ and Morris County, NJ. The full underlying dataset is downloadable directly, one row per county.