Waukesha County, WI Shrink-Swell Risk
Waukesha County's SSURGO shrink-swell reading
Low
In Waukesha County, WI, 72.9% of the surveyed soil carries a "Low" shrink-swell rating, 2.36% 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
Waukesha County's reading is an average across the whole county, not a promise about any one lot inside it. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Waukesha County will actually do.
Budgeting for Waukesha County, WI
Waukesha 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 Waukesha County, WI compares
Among the 3,085 rated counties on this site, Waukesha County, WI ranks 1,675 most-constrained nationally, and 27 of 72 within Wisconsin. Waukesha County covers 550 square miles and counts 417,029 residents.
For contrast
Orleans Parish, LA carries this site's most-constrained reading. Clayton County, IA and Lancaster County, SC 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 Wisconsin
Every county in Wisconsin is on this site, including Kewaunee County, WI and Walworth County, WI. The full underlying dataset is downloadable directly, one row per county.