Grant Parish, LA Shrink-Swell Risk

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

Low

Grant Parish, LA: USDA's soil survey rates 68.9% of the county "Low" for shrink-swell potential (2.87% linear extensibility). 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.

What Grant Parish's reading doesn't cover

Two lots a mile apart in Grant Parish can carry different soil, even though they share one countywide reading. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Grant Parish will actually do.

What it costs to find out, versus to ignore it

With Grant Parish, LA rating "Low", 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.

Grant Parish's rank among Louisiana counties

Nationally, Grant Parish, LA is the 1,288-most-constrained of 3,085 rated counties for shrink-swell soil. Within Louisiana alone it ranks 52 of 64. The county spans 644 square miles, home to 22,109 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Warren County, NY and Harrison County, TX 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 East Carroll Parish, LA and St. James Parish, LA. The full underlying dataset is downloadable directly, one row per county.