Placer County, CA Shrink-Swell Risk

Placer County's SSURGO shrink-swell reading

Low

In Placer County, CA, 81.9% of the surveyed soil carries a "Low" shrink-swell rating, 2.06% linear extensibility on average. That's the easiest starting point on this site's scale - a standard foundation is the reasonable default here, though any one lot can still differ.

Before you rely on this for one address

Placer 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 Placer County, CA

Placer 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.

Placer County's rank among California counties

Among the 3,085 rated counties on this site, Placer County, CA ranks 1,925 most-constrained nationally, and 47 of 58 within California. The county spans 1,407 square miles, home to 433,822 people.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Lane County, OR and Greenbrier County, WV 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 California

Every county in California is on this site, including San Mateo County, CA and Del Norte County, CA. The full underlying dataset is downloadable directly, one row per county.