The top level (four) sits under a sawtooth roof at the front and two concealed gables at the rear. It is more open plan than the tenantable levels below, however its service spaces around the light well correspond to those below and a central hallway is delineated by columns. Aside from its windows on the south-eastern and south-western walls, there are clerestory windows oriented to Queen Street. A bulkhead disguising ducted air-conditioning has been installed over the central corridor space and in the toilets. Most wall and ceiling linings appear to be recent.