Coosa County, AL Shrink-Swell Risk

What Coosa County, AL's soil means for a foundation

Low

USDA's SSURGO data puts Coosa County, AL's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.57% across 95.8% 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 Coosa County, AL at once, not any single address. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Report cost vs. repair cost

With Coosa County, AL 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.

Coosa County's rank among Alabama counties

Nationally, Coosa County, AL is the 2,422-most-constrained of 3,085 rated counties for shrink-swell soil. Within Alabama alone it ranks 47 of 67. Coosa County, AL is 651 square miles with a population of 10,291.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Camas County, ID and St. Johns County, FL 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 Alabama

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