Greenlee County, AZ Shrink-Swell Risk

What Greenlee County, AZ's soil means for a foundation

Moderate

USDA's SSURGO data puts Greenlee County, AZ's soil at "Moderate" shrink-swell potential, an area-weighted linear extensibility of 3.64% across 40.2% 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 Greenlee County, AZ at once, not any single address. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Greenlee County.

Report cost vs. repair cost

With Greenlee County, AZ 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 Greenlee County, AZ compares

Nationally, Greenlee County, AZ is the 766-most-constrained of 3,085 rated counties for shrink-swell soil. Within Arizona alone it ranks 2 of 15. Greenlee County, AZ is 1,843 square miles with a population of 9,410.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Goochland County, VA and Gregory County, SD 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 Arizona

Every county in Arizona is on this site, including Santa Cruz County, AZ and Pinal County, AZ. The full underlying dataset is downloadable directly, one row per county.