This three-part courthouse, with a two-story gabled central block and lower, hipped-roof flanking wings, is likely modeled on the courthouse (BO1) of 1847 built by Smith in adjoining Botetourt County. Like its predecessor, the Craig courthouse is dominated by a projecting temple-front portico with unfluted Doric columns, a wide frieze, and shallow pediment. The principal exterior difference is Craig's octagonal cupola, a departure from the square clock tower at Botetourt. The double-door entrance, framed by a Greek Revival pilastered surround, leads directly into a wide hall, to the rear of which is a staircase in the modern rear section that ascends to the second-floor courtroom.