Comanche County, TX Shrink-Swell Risk

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

Moderate

USDA's SSURGO data puts Comanche County, TX's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.85% across 55.7% of the county's surveyed land. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

This is a county figure, not a lot figure

USDA's survey covers the whole of Comanche 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 Comanche 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 Comanche County, TX compares

Nationally, Comanche County, TX is the 648-most-constrained of 3,085 rated counties for shrink-swell soil. Within Texas alone it ranks 139 of 253. Comanche County covers 938 square miles and counts 14,359 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Crowley County, CO and Monongalia County, WV 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 Franklin County, TX and Hill County, TX. The full underlying dataset is downloadable directly, one row per county.