Lackawanna County, PA Shrink-Swell Risk
What Lackawanna County, PA's soil means for a foundation
Low
USDA's SSURGO data puts Lackawanna County, PA's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 0.85% across 100% of the county's surveyed land. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.
This is a county figure, not a lot figure
USDA's survey covers the whole of Lackawanna County, PA at once, not any single address. 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 Lackawanna County.
Report cost vs. repair cost
With Lackawanna 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, Lackawanna County, PA is the 2,962-most-constrained of 3,085 rated counties for shrink-swell soil. Within Pennsylvania alone it ranks 61 of 67. Lackawanna County covers 459 square miles and counts 216,859 residents.
Before you act on this
Orleans Parish, LA carries this site's most-constrained reading. Macon County, GA and Barber County, KS 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 Erie County, PA and Armstrong County, PA. The full underlying dataset is downloadable directly, one row per county.