Two open light wells to each side of the central entrance block ventilate and light adjacent offices, the ground floor toilet areas and the rear corridor. The building is organised by a single-loaded corridor to the rear, the main rooms are entered from the organising corridor and subsidiary rooms are accessed from transverse passages. The vertical rises are on axis with the main entrance. The concrete landing of the portico entrance opens through a set of double timber panelled doors into a small lobby which opens into the main entrance hall. A doorbell button is located to the left of the lobby entrance doors within the portico. The lobby is decorated with carved timber work to the panelled door surrounds, has a decorative cut glass fanlight to the main timber panelled doors and rosette pateras to the each side of the fanlight. The floors to the lobby and entrance hall are finished with red, green and yellow terrazzo in geometric patterns and the walls are panelled with stained timber to picture rail height. A decorative elliptical arch marks the junction of the hall and the rear corridor. The inscription within the moulded plaster architrave reads "CUM PIETATE ET SANCTITATE HANC ARTEM MEAM PROFITEBOR". The ceiling is decorated with a plaster relief border of tied straight twigs. The central stairwell weaves around the lift well and has terrazzo treads and landings and features a grooved silky oak handrail with scrolled ends. The original lift is encased within a decorative lattice metal cage and retains its original interior. The lift operator lever mechanism within the lift chamber has been dismantled. The rear entrance lobby has a fine terrazzo floor in red, green and yellow, has stained timber wall panelling and features a timber and glass public telephone booth to the southwest corner. The toilets to the ground and second floors retain fine terrazzo flooring and privacy screens. Original terrazzo sills to former ground floor laboratory areas remain. The large timber sash windows to the perimeter of the building have generous timber sills to the interiors and provide substantial light to offices, laboratories and the rear corridor. Windows to the corridor and east and west elevation retain much of the original blue-green tinted anti-actinic glazing. The committee room to the southwest corner of the second floor retains original timber panelling and is now an office. The library on the first floor has been altered and is now a meeting room with adjacent offices and catering area. This area opens onto the southern balcony, which affords sweeping views across Victoria Park, Victoria Park Golf Course, Queensland University of Technology Kelvin Grove Campus and over towards Gregory Terrace and beyond to Mt Coot-tha.