Armstrong County, TX Shrink-Swell Risk

Armstrong County's SSURGO shrink-swell reading

Moderate

In Armstrong County, TX, 52.7% of the surveyed soil carries a "Moderate" shrink-swell rating, 4.03% linear extensibility on average. 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.

Before you rely on this for one address

Armstrong County's reading is an average across the whole county, not a promise about any one lot inside it. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Budgeting for Armstrong County, TX

Armstrong County's soil reading points toward standard foundation practice as the likely outcome, not the exception. 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.

Where this sits nationally

Among the 3,085 rated counties on this site, Armstrong County, TX ranks 549 most-constrained nationally, and 126 of 253 within Texas. The county spans 909 square miles, home to 1,809 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Lincoln County, SD and Warrick County, IN 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

Elsewhere in Texas

Every county in Texas is on this site, including Hockley County, TX and Karnes County, TX. The full underlying dataset is downloadable directly, one row per county.