Summit County, CO Shrink-Swell Risk

Shrink-swell potential in Summit County, CO

Low

Soil across 87.5% of Summit County, CO comes back "Low" in USDA's shrink-swell data, averaging 1.42% linear extensibility. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

What this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Summit County, CO - 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).

Summit County: the real numbers

Summit 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, Summit County, CO ranks 2,596 most-constrained nationally, and 52 of 63 within Colorado. The county spans 608 square miles, home to 30,882 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Camden County, NC and Carroll County, IA 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 Pueblo County, CO and Bent County, CO. The full underlying dataset is downloadable directly, one row per county.