Franklin County, WA Shrink-Swell Risk

Franklin County's SSURGO shrink-swell reading

Low

In Franklin County, WA, 99.1% of the surveyed soil carries a "Low" shrink-swell rating, 1.54% linear extensibility on average. Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

Before you rely on this for one address

Franklin 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 Franklin County, WA

Franklin 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 Franklin County, WA compares

Among the 3,085 rated counties on this site, Franklin County, WA ranks 2,448 most-constrained nationally, and 30 of 39 within Washington. Franklin County, WA is 1,242 square miles with a population of 101,238.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Androscoggin County, ME and Wyandot 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 Washington

Every county in Washington is on this site, including Mason County, WA and Lewis County, WA. The full underlying dataset is downloadable directly, one row per county.