Llano County, TX Shrink-Swell Risk

Llano County, TX's soil, for shrink-swell risk

Low

Llano County, TX: USDA's soil survey rates 58.4% of the county "Low" for shrink-swell potential (2.57% linear extensibility). That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What Llano County's reading doesn't cover

Two lots a mile apart in Llano County can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

What it costs to find out, versus to ignore it

With Llano 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.

How Llano County, TX compares

Nationally, Llano County, TX is the 1,500-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 214 of 253. Llano County covers 934 square miles and counts 23,163 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Lyon County, KY and Noble County, OH 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 Edwards County, TX and Knox County, TX. The full underlying dataset is downloadable directly, one row per county.