Livingston Parish, LA Shrink-Swell Risk
Shrink-swell potential in Livingston Parish, LA
Moderate
Soil across 42.2% of Livingston Parish, LA comes back "Moderate" in USDA's shrink-swell data, averaging 4.38% linear extensibility. Conventional foundations are the reasonable expectation here, with routine moisture-control practice rather than special engineering.
What this number does and doesn't tell you
This is a countywide, area-weighted figure across every soil survey map unit in Livingston Parish, LA - never a reading for one specific parcel. A local geotechnical report, typically $1,000-$5,000 (around $2,700 typical), is the only way to know what one lot in Livingston Parish will actually do.
Livingston Parish: the real numbers
Livingston 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.
Where this sits nationally
Among the 3,085 rated counties on this site, Livingston Parish, LA ranks 414 most-constrained nationally, and 36 of 64 within Louisiana. Livingston Parish covers 648 square miles and counts 152,886 residents.
See how another county compares
Orleans Parish, LA carries this site's most-constrained reading. Harney County, OR and Loving 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
Elsewhere in Louisiana
Every county in Louisiana is on this site, including West Feliciana Parish, LA and Vernon Parish, LA. The full underlying dataset is downloadable directly, one row per county.