Grimes County, TX Shrink-Swell Risk
Grimes County's SSURGO shrink-swell reading
High
In Grimes County, TX, 37.4% of the surveyed soil carries a "High" shrink-swell rating, 6.38% linear extensibility on average. Soil at this level can crack a standard foundation without moisture-control measures - consistent watering near the foundation, correct grading, root barriers - or added structural design.
Before you rely on this for one address
Grimes 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 Grimes County, TX
Grimes 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.
Where this sits nationally
Among the 3,085 rated counties on this site, Grimes County, TX ranks 97 most-constrained nationally, and 36 of 253 within Texas. Grimes County covers 787 square miles and counts 33,448 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Jefferson Davis Parish, LA and Williamson County, TN 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 Hill County, TX and Bandera County, TX. The full underlying dataset is downloadable directly, one row per county.