Frost line depth in Somerset County, NJ

How deep the ground freezes in Somerset County, NJ

22 in. Dig to 22 in, just below the frost. Nearest NOAA station: Somerville 4 Nw, 3.9 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.

Code depth · Snow