Webb County, TX Shrink-Swell Risk

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

Moderate

USDA's SSURGO data puts Webb County, TX's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 5.43% across 43.6% of the county's surveyed land. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

This is a county figure, not a lot figure

USDA's survey covers the whole of Webb 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 Webb County, TX rating "Moderate", 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.

How Webb County, TX compares

Nationally, Webb County, TX is the 226-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 61 of 253. Webb County covers 3,361 square miles and counts 272,823 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Monroe County, IN and St. Mary Parish, LA 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 Jefferson County, TX and Crosby County, TX. The full underlying dataset is downloadable directly, one row per county.