Collin County, TX Shrink-Swell Risk

Shrink-swell potential in Collin County, TX

Very High

Soil across 67% of Collin County, TX comes back "Very High" in USDA's shrink-swell data, averaging 9.91% linear extensibility. This is the reading most likely to explain cracking a homeowner is already seeing. An engineered foundation design, not a conventional footing, is the realistic expectation for new construction.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Collin County, TX - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Collin County: the real numbers

Collin County's soil reading is exactly the case where a report before construction, or before cracks widen, pays for itself. A geotechnical report runs $1,000-$5,000 (typically $2,700); an actual foundation repair, once cracking sets in, typically runs $5,000-$15,000 (around $10,000 typical) - roughly 4x the report.

How Collin County, TX compares

Among the 3,085 rated counties on this site, Collin County, TX ranks 31 most-constrained nationally, and 3 of 253 within Texas. Collin County, TX is 842 square miles with a population of 1,254,658.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Franklin County, WA and Fond du Lac County, WI are worth a look for comparison.

How this reading is built, and its real limits · The warning signs of expansive-clay damage, explained

Elsewhere in Texas

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