Sebastian County, AR Shrink-Swell Risk

Sebastian County's SSURGO shrink-swell reading

Low

In Sebastian County, AR, 90.2% of the surveyed soil carries a "Low" shrink-swell rating, 1.82% 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

Sebastian 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 Sebastian County, AR

Sebastian 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, Sebastian County, AR ranks 2,145 most-constrained nationally, and 68 of 75 within Arkansas. The county spans 531 square miles, home to 130,035 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Sabine County, TX and Fairfax city, VA 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 Arkansas

Every county in Arkansas is on this site, including Pike County, AR and Marion County, AR. The full underlying dataset is downloadable directly, one row per county.