Dade County, MO Shrink-Swell Risk
What Dade County, MO's soil means for a foundation
Low
USDA's SSURGO data puts Dade County, MO's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.38% across 74% of the county's surveyed land. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.
This is a county figure, not a lot figure
USDA's survey covers the whole of Dade County, MO 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 Dade County will actually do.
Report cost vs. repair cost
With Dade County, MO 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.
How Dade County, MO compares
Nationally, Dade County, MO is the 1,667-most-constrained of 3,085 rated counties for shrink-swell soil. Within Missouri alone it ranks 86 of 114. The county spans 490 square miles, home to 7,622 people.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Van Buren County, IA and De Baca County, NM 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 Missouri
Every county in Missouri is on this site, including Shannon County, MO and Schuyler County, MO. The full underlying dataset is downloadable directly, one row per county.