Cumberland County, NJ Shrink-Swell Risk

Shrink-swell potential in Cumberland County, NJ

Low

Soil across 100% of Cumberland County, NJ comes back "Low" in USDA's shrink-swell data, averaging 1.13% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Cumberland County, NJ - never a reading for one specific parcel. 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 Cumberland County.

Cumberland County: the real numbers

Cumberland 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, Cumberland County, NJ ranks 2,817 most-constrained nationally, and 15 of 21 within New Jersey. The county spans 483 square miles, home to 155,678 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Keokuk County, IA and Sioux County, NE 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 Burlington County, NJ and Mercer County, NJ. The full underlying dataset is downloadable directly, one row per county.