Jackson County, MO Shrink-Swell Risk

Jackson County's SSURGO shrink-swell reading

Moderate

In Jackson County, MO, 61% of the surveyed soil carries a "Moderate" shrink-swell rating, 5.17% linear extensibility on average. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

Before you rely on this for one address

Jackson County's reading is an average across the whole county, not a promise about any one lot inside it. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Jackson County will actually do.

Budgeting for Jackson County, MO

Jackson 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, Jackson County, MO ranks 260 most-constrained nationally, and 35 of 114 within Missouri. Jackson County, MO is 605 square miles with a population of 727,362.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Clayton County, GA and Noble County, OK 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 Missouri

Every county in Missouri is on this site, including Barton County, MO and Holt County, MO. The full underlying dataset is downloadable directly, one row per county.