Marion County, AL Shrink-Swell Risk

Marion County's SSURGO shrink-swell reading

Low

In Marion County, AL, 97% of the surveyed soil carries a "Low" shrink-swell rating, 1.37% linear extensibility on average. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

Before you rely on this for one address

Marion County's reading is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Budgeting for Marion County, AL

Marion 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, Marion County, AL ranks 2,639 most-constrained nationally, and 58 of 67 within Alabama. Marion County, AL is 742 square miles with a population of 29,323.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Ashe County, NC and Burleson 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 Alabama

Every county in Alabama is on this site, including Lauderdale County, AL and Elmore County, AL. The full underlying dataset is downloadable directly, one row per county.