Pettis County, MO Shrink-Swell Risk

Pettis County's SSURGO shrink-swell reading

Moderate

In Pettis County, MO, 75.1% of the surveyed soil carries a "Moderate" shrink-swell rating, 4.48% linear extensibility on average. 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.

Before you rely on this for one address

Pettis 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 Pettis County will actually do.

Budgeting for Pettis County, MO

Pettis 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.

Pettis County's rank among Missouri counties

Among the 3,085 rated counties on this site, Pettis County, MO ranks 391 most-constrained nationally, and 48 of 114 within Missouri. The county spans 682 square miles, home to 43,791 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Fayette County, IN and Blair County, PA 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 St. Louis County, MO and Lafayette County, MO. The full underlying dataset is downloadable directly, one row per county.