St. Helena Parish, LA Shrink-Swell Risk

St. Helena Parish's SSURGO shrink-swell reading

Low

In St. Helena Parish, LA, 97.2% of the surveyed soil carries a "Low" shrink-swell rating, 0.94% linear extensibility on average. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

Before you rely on this for one address

St. Helena Parish'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 St. Helena Parish will actually do.

Budgeting for St. Helena Parish, LA

St. Helena Parish'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 St. Helena Parish, LA compares

Among the 3,085 rated counties on this site, St. Helena Parish, LA ranks 2,925 most-constrained nationally, and 64 of 64 within Louisiana. St. Helena Parish covers 409 square miles and counts 10,857 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Pointe Coupee Parish, LA and Green County, WI 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 Louisiana

Every county in Louisiana is on this site, including St. Mary Parish, LA and Allen Parish, LA. The full underlying dataset is downloadable directly, one row per county.