A Romanesque Revival building rendered in local volcanic bluestone, the Bishop Estate Building offered an architectural image of stability during the tenuous period of the provisional government's rule. The building's second-story stonework, with its rounded piers, heavy dentil course, and high-relief upper level with its checkerboard pattern, is of exceptional quality. The cast-iron pilaster at the southeast end of the building is in need of attention. It is a remnant of the Campbell Building (1883), which shared a common wall with the Bishop Estate building until 1965 when it was demolished.