Dorchester County, MD Shrink-Swell Risk

What Dorchester County, MD's soil means for a foundation

Low

USDA's SSURGO data puts Dorchester County, MD's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.61% across 85.4% of the county's surveyed land. 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.

This is a county figure, not a lot figure

USDA's survey covers the whole of Dorchester County, MD at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Dorchester County will actually do.

Report cost vs. repair cost

With Dorchester County, MD 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, Dorchester County, MD is the 2,377-most-constrained of 3,085 rated counties for shrink-swell soil. Within Maryland alone it ranks 9 of 24. Dorchester County, MD is 541 square miles with a population of 33,138.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Sherburne County, MN and Hockley 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

More of Maryland

Every county in Maryland is on this site, including Baltimore County, MD and Talbot County, MD. The full underlying dataset is downloadable directly, one row per county.