Franklin County, FL Shrink-Swell Risk

Shrink-swell potential in Franklin County, FL

Low

Soil across 94.9% of Franklin County, FL comes back "Low" in USDA's shrink-swell data, averaging 1.46% 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 this number does and doesn't tell you

This is a countywide, area-weighted figure across every soil survey map unit in Franklin County, FL - never a reading for one specific parcel. 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 Franklin County.

Franklin County: the real numbers

Franklin County'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.

Franklin County's rank among Florida counties

Among the 3,085 rated counties on this site, Franklin County, FL ranks 2,560 most-constrained nationally, and 9 of 66 within Florida. The county spans 545 square miles, home to 12,979 people.

For contrast

Orleans Parish, LA carries this site's most-constrained reading. Cabarrus County, NC and Harlan County, KY 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 Florida

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