Gloucester County, NJ Shrink-Swell Risk
Gloucester County's SSURGO shrink-swell reading
Low
In Gloucester County, NJ, 94.1% of the surveyed soil carries a "Low" shrink-swell rating, 1.3% 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
Gloucester 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 Gloucester County.
Budgeting for Gloucester County, NJ
Gloucester 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, Gloucester County, NJ ranks 2,695 most-constrained nationally, and 13 of 21 within New Jersey. Gloucester County covers 322 square miles and counts 311,783 residents.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Lincoln County, NV and Lee County, IA 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 New Jersey
Every county in New Jersey is on this site, including Bergen County, NJ and Warren County, NJ. The full underlying dataset is downloadable directly, one row per county.