Of the four levels of tenancies located above the ground floor of the Regent Building, the first three share an original general floor plan, consisting of a central, straight hallway linking various rooms to the lift and stairwell at its southern end. Rooms line this corridor along its length to the south-west and at the Queen Street end of the building, while staircases, toilets and other service spaces occupy the north-eastern side. The 1928 stair winds around a generously scaled void and has a wrought iron balustrade with a timber handrail moulded in a single length. While remaining in its original location next to the 1928 stair, the lift itself is not original. Further along the north-eastern side of the building there is a narrow light well, with toilets between it and the central hallway, and a fire escape staircase at its Queen Street end, which was installed during the building's 1978-80 redevelopment. The toilets occupy their original positions in the building but have been renovated since being first installed there. The windows looking into the light well, apart from those to the main stairwell (metal-framed), have been removed and the openings filled in. Kitchenettes and services cupboards sit between the 1979 fire escape and the central hallway.