Randall County, TX Shrink-Swell Risk
What Randall County, TX's soil means for a foundation
Moderate
USDA's SSURGO data puts Randall County, TX's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 5.34% across 69.8% of the county's surveyed land. A real but modest amount of movement - standard foundations usually hold up, but drainage and moisture control around the foundation still matter more than on low-risk soil.
This is a county figure, not a lot figure
USDA's survey covers the whole of Randall County, TX at once, not any single address. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Randall County will actually do.
Report cost vs. repair cost
With Randall 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.
Randall County's rank among Texas counties
Nationally, Randall County, TX is the 235-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 63 of 253. Randall County covers 913 square miles and counts 150,547 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Providence County, RI and Newton County, TX 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 McCulloch County, TX and Lampasas County, TX. The full underlying dataset is downloadable directly, one row per county.