LaSalle Parish, LA Shrink-Swell Risk

LaSalle Parish, LA's soil, for shrink-swell risk

Moderate

LaSalle Parish, LA: USDA's soil survey rates 53.5% of the county "Moderate" for shrink-swell potential (3.78% linear extensibility). Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.

What LaSalle Parish's reading doesn't cover

Two lots a mile apart in LaSalle Parish can carry different soil, even though they share one countywide reading. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

What it costs to find out, versus to ignore it

With LaSalle Parish, LA rating "Moderate", a geotechnical report is still worthwhile before a build, just less urgent than in a high-risk county. 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.

Where this sits nationally

Nationally, LaSalle Parish, LA is the 685-most-constrained of 3,085 rated counties for shrink-swell soil. Within Louisiana alone it ranks 42 of 64. LaSalle Parish covers 625 square miles and counts 14,702 residents.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Van Zandt County, TX and Banner County, NE 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

More of Louisiana

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