Marion County, FL Shrink-Swell Risk

What Marion County, FL's soil means for a foundation

Low

USDA's SSURGO data puts Marion County, FL's soil at "Low" shrink-swell potential, an area-weighted linear extensibility of 1.31% across 90.2% of the county's surveyed land. That's as favorable a county-level reading as this dataset produces - standard foundation practice, pending one lot's own geotechnical report.

This is a county figure, not a lot figure

USDA's survey covers the whole of Marion County, FL at once, not any single address. A site-specific soil report, usually $1,000-$5,000, is what an engineer would actually pull before designing a foundation on a lot in Marion County.

Report cost vs. repair cost

With Marion County, FL 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.

Marion County's rank among Florida counties

Nationally, Marion County, FL is the 2,688-most-constrained of 3,085 rated counties for shrink-swell soil. Within Florida alone it ranks 18 of 66. Marion County, FL is 1,588 square miles with a population of 428,905.

See how another county compares

Orleans Parish, LA carries this site's most-constrained reading. Stevens County, KS and Menominee County, MI 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 Florida

Every county in Florida is on this site, including Pasco County, FL and Sumter County, FL. The full underlying dataset is downloadable directly, one row per county.