Mobile County, AL Shrink-Swell Risk

Mobile County's SSURGO shrink-swell reading

Low

In Mobile County, AL, 94.9% of the surveyed soil carries a "Low" shrink-swell rating, 0.76% linear extensibility on average. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

Before you rely on this for one address

Mobile County's reading is an average across the whole county, not a promise about any one lot inside it. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Mobile County.

Budgeting for Mobile County, AL

Mobile 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.

Mobile County's rank among Alabama counties

Among the 3,085 rated counties on this site, Mobile County, AL ranks 3,001 most-constrained nationally, and 67 of 67 within Alabama. Mobile County, AL is 1,229 square miles with a population of 412,339.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Beadle County, SD and Overton County, TN 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 Tallapoosa County, AL and Dallas County, AL. The full underlying dataset is downloadable directly, one row per county.