Union Parish, LA Shrink-Swell Risk

Union Parish's SSURGO shrink-swell reading

Low

In Union Parish, LA, 72.1% of the surveyed soil carries a "Low" shrink-swell rating, 2.22% 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

Union Parish's reading is an average across the whole county, not a promise about any one lot inside it. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Union Parish.

Budgeting for Union Parish, LA

Union 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.

Union Parish's rank among Louisiana counties

Among the 3,085 rated counties on this site, Union Parish, LA ranks 1,783 most-constrained nationally, and 56 of 64 within Louisiana. Union Parish covers 877 square miles and counts 20,617 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Cattaraugus County, NY and Andrew County, MO 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 Lafayette Parish, LA and St. Martin Parish, LA. The full underlying dataset is downloadable directly, one row per county.