Tangipahoa Parish, LA Shrink-Swell Risk

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

Low

Tangipahoa Parish, LA: USDA's soil survey rates 99.1% of the county "Low" for shrink-swell potential (1.22% linear extensibility). Among the 3,144 counties on this site, that's the clean result: little shrink-swell movement, standard construction the likely outcome.

What Tangipahoa Parish's reading doesn't cover

Two lots a mile apart in Tangipahoa 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 Tangipahoa 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.

How Tangipahoa Parish, LA compares

Nationally, Tangipahoa Parish, LA is the 2,757-most-constrained of 3,085 rated counties for shrink-swell soil. Within Louisiana alone it ranks 61 of 64. The county spans 791 square miles, home to 139,823 people.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Cattaraugus County, NY and Mills County, IA 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 Tensas Parish, LA and Concordia Parish, LA. The full underlying dataset is downloadable directly, one row per county.