Carbon County, PA Shrink-Swell Risk

Carbon County, PA's soil, for shrink-swell risk

Low

Carbon County, PA: USDA's soil survey rates 98.8% of the county "Low" for shrink-swell potential (1.26% linear extensibility). That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.

What Carbon County's reading doesn't cover

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

What it costs to find out, versus to ignore it

With Carbon County, PA 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, Carbon County, PA is the 2,733-most-constrained of 3,085 rated counties for shrink-swell soil. Within Pennsylvania alone it ranks 54 of 67. The county spans 381 square miles, home to 65,743 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Van Wert County, OH and Clarke County, GA 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

More of Pennsylvania

Every county in Pennsylvania is on this site, including Allegheny County, PA and Sullivan County, PA. The full underlying dataset is downloadable directly, one row per county.