Greene County, PA Shrink-Swell Risk
Shrink-swell potential in Greene County, PA
Low
Soil across 73.1% of Greene County, PA comes back "Low" in USDA's shrink-swell data, averaging 2.59% 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 Greene County, PA - 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 Greene County.
Greene County: the real numbers
Greene 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, Greene County, PA ranks 1,485 most-constrained nationally, and 2 of 67 within Pennsylvania. Greene County, PA is 576 square miles with a population of 33,960.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Beaufort County, NC and Fillmore 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 Pennsylvania
Every county in Pennsylvania is on this site, including Westmoreland County, PA and Susquehanna County, PA. The full underlying dataset is downloadable directly, one row per county.