Sullivan County, NY Shrink-Swell Risk

Shrink-swell potential in Sullivan County, NY

Low

Soil across 99.9% of Sullivan County, NY comes back "Low" in USDA's shrink-swell data, averaging 1.21% 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 this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Sullivan County, NY - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Sullivan County will actually do.

Sullivan County: the real numbers

Sullivan 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, Sullivan County, NY ranks 2,764 most-constrained nationally, and 40 of 62 within New York. Sullivan County covers 968 square miles and counts 80,450 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Grant County, NE and Rankin County, MS 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 York

Every county in New York is on this site, including Otsego County, NY and Genesee County, NY. The full underlying dataset is downloadable directly, one row per county.