Costilla County, CO Shrink-Swell Risk

Shrink-swell potential in Costilla County, CO

Low

Soil across 92.9% of Costilla County, CO comes back "Low" in USDA's shrink-swell data, averaging 1.35% linear extensibility. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Costilla County, CO - 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 Costilla County will actually do.

Costilla County: the real numbers

Costilla 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.

Costilla County's rank among Colorado counties

Among the 3,085 rated counties on this site, Costilla County, CO ranks 2,664 most-constrained nationally, and 53 of 63 within Colorado. Costilla County, CO is 1,228 square miles with a population of 3,686.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Surry County, NC and Athens County, OH 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 Colorado

Every county in Colorado is on this site, including Mesa County, CO and Bent County, CO. The full underlying dataset is downloadable directly, one row per county.