Parmer County, TX Shrink-Swell Risk

Shrink-swell potential in Parmer County, TX

Moderate

Soil across 81.7% of Parmer County, TX comes back "Moderate" in USDA's shrink-swell data, averaging 4.65% linear extensibility. That's a middle reading: not the sharp swings that crack a foundation outright, but enough that grading and drainage are worth getting right.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Parmer County, TX - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Parmer County will actually do.

Parmer County: the real numbers

Parmer 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.

Parmer County's rank among Texas counties

Among the 3,085 rated counties on this site, Parmer County, TX ranks 359 most-constrained nationally, and 88 of 253 within Texas. Parmer County covers 881 square miles and counts 9,669 residents.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Fulton County, OH and Miller County, GA 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 Scurry County, TX and Concho County, TX. The full underlying dataset is downloadable directly, one row per county.