Frost line depth in El Dorado County, CA

How deep the ground freezes in El Dorado County, CA

10 in. Dig to 12 in, the 12 in code minimum. Nearest NOAA station: Pacific House, 2.5 mi.

Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.