Lamb County, TX Shrink-Swell Risk

What Lamb County, TX's soil means for a foundation

Low

USDA's SSURGO data puts Lamb County, TX's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 2.83% across 78% 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 Lamb County, TX 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 Lamb County, TX 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.

Where this sits nationally

Nationally, Lamb County, TX is the 1,326-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 199 of 253. Lamb County covers 1,016 square miles and counts 12,687 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Plymouth County, IA and Philadelphia 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

More of Texas

Every county in Texas is on this site, including Rains County, TX and Caldwell County, TX. The full underlying dataset is downloadable directly, one row per county.