Alameda County, CA Shrink-Swell Risk

Alameda County's SSURGO shrink-swell reading

Moderate

In Alameda County, CA, 44.6% of the surveyed soil carries a "Moderate" shrink-swell rating, 4.64% linear extensibility on average. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

Before you rely on this for one address

Alameda 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 Alameda County, CA

Alameda 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.

How Alameda County, CA compares

Among the 3,085 rated counties on this site, Alameda County, CA ranks 361 most-constrained nationally, and 6 of 58 within California. Alameda County, CA is 737 square miles with a population of 1,649,060.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Harrison County, IN and Jackson Parish, LA 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 Bernardino County, CA and Yuba County, CA. The full underlying dataset is downloadable directly, one row per county.