Richland Parish, LA Shrink-Swell Risk

Shrink-swell potential in Richland Parish, LA

Moderate

Soil across 47% of Richland Parish, LA comes back "Moderate" in USDA's shrink-swell data, averaging 5.25% 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 Richland Parish, LA - never a reading for one specific parcel. The real answer for one lot is still a site-specific geotechnical report, running about $1,000-$5,000 (typically near $2,700).

Richland Parish: the real numbers

Richland 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.

How Richland Parish, LA compares

Among the 3,085 rated counties on this site, Richland Parish, LA ranks 247 most-constrained nationally, and 31 of 64 within Louisiana. Richland Parish covers 556 square miles and counts 19,643 residents.

Before you act on this

Orleans Parish, LA carries this site's most-constrained reading. Alpine County, CA and Winnebago County, WI 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 St. John the Baptist Parish, LA and East Baton Rouge Parish, LA. The full underlying dataset is downloadable directly, one row per county.