The Commonwealth Offices, a three-storeyed building with subfloor, is a rendered masonry structure with a triple corrugated iron hipped roof concealed behind a parapet wall. The building, located on the south side of Sturt Street, shows classical influences in its facade which consists of four bays separated by pilasters supporting a deep cornice between each floor, with a rendered parapet with open circle motifs. Each bay has two arched sash windows, except the second bay which is narrower and forms the entrance, with single arched sash windows above and is surmounted by a pediment with a plaster sculpture of the Townsville City seal. The entrance has an arched door, with a cantilevered metal awning, located midway between the ground floor and subfloor. The western bay has a large arch with iron gates which accesses a driveway to the rear of the building.
