Luna County, NM Shrink-Swell Risk

Luna County's SSURGO shrink-swell reading

Moderate

In Luna County, NM, 39.9% of the surveyed soil carries a "Moderate" shrink-swell rating, 3.96% 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

Luna County's reading is an average across the whole county, not a promise about any one lot inside it. 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 Luna County.

Budgeting for Luna County, NM

Luna 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, Luna County, NM ranks 590 most-constrained nationally, and 7 of 32 within New Mexico. The county spans 2,965 square miles, home to 25,878 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Cass County, MO and Jeff Davis County, TX 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 New Mexico

Every county in New Mexico is on this site, including Rio Arriba County, NM and Valencia County, NM. The full underlying dataset is downloadable directly, one row per county.