McCulloch County, TX Shrink-Swell Risk
What McCulloch County, TX's soil means for a foundation
Moderate
USDA's SSURGO data puts McCulloch County, TX's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 4.72% across 68% 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 McCulloch 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 McCulloch 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.
McCulloch County's rank among Texas counties
Nationally, McCulloch County, TX is the 345-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 85 of 253. McCulloch County covers 1,066 square miles and counts 7,448 residents.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Bladen County, NC and West Carroll 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 Sabine County, TX and Matagorda County, TX. The full underlying dataset is downloadable directly, one row per county.