York County, SC Shrink-Swell Risk

Shrink-swell potential in York County, SC

Moderate

Soil across 67.8% of York County, SC comes back "Moderate" in USDA's shrink-swell data, averaging 3.11% linear extensibility. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in York County, SC - 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 York County.

York County: the real numbers

York 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, York County, SC ranks 1,111 most-constrained nationally, and 2 of 46 within South Carolina. York County covers 681 square miles and counts 303,001 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Posey County, IN and Navarro County, TX 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 South Carolina

Every county in South Carolina is on this site, including Laurens County, SC and Greenwood County, SC. The full underlying dataset is downloadable directly, one row per county.