Immediately behind the post office, the former four-roomed quarters component has been converted to a Post Master's office, store room, mail room and mail contractor's sorting rooms. The original verandah on the southern side of the building has been converted to storage and staff amenities. The trailing service wing comprising the former servant's room, kitchen and pantry is presently being used for storage and as a bike shed. Original fabric The original fabric of the building which survives includes: Structural frame: Timber floor, wall and roof framing on timber pole stumps. External walls: Variously straight and chamfered profile timber weatherboard cladding to stud-framed areas indicating various periods of construction; verandah areas have exposed vertical and diagonal studs; the sub-floor spaces are enclosed by vertical timber battens. Internal walls: Variously lined with horizontal or vertical beaded and V-jointed timber lining boards; some rooms have expressed hardwood stud frame. Walls to original kitchen range alcove are lined with corrugated galvanised iron. Floor: Timber floor boards with moulded timber skirting boards. Ceiling: Beaded timber board-lined ceilings with timber quad cornices; circular timber ceiling vent covers. Roof: Hipped form with pyramidal form to quarters component; integral verandahs; all clad with corrugated galvanised iron. Timber-lined eaves soffits. Decorative metal ridge ventilators on post office and quarters components. Front gable introduced in 1910-11 works. Other: The original side and front elevations have timber-framed double-hung sash windows with two-light sashes and timber reveals. The 1910 alterations which survive include: a front gable with half-timbering, building inscription "BOONAH POST OFFICE" and a five-sash casement window bay to the front elevation Timber-framed verandahs integral with main roof and finished with timber balustrade with lattice infill (lattice screens later introduced above balustrade). Internal doors which are variously four-panelled timber with glazed operable fanlight over or ledged and braced timber construction. Original quarters kitchen with wood-fired range and surrounding walls clad with corrugated galvanised iron Grounds originally enclosed by timber picket fence. Condition The original design of Boonah Post Office was a simple, asymmetrically composed porch and gable building with a small postal hall and large quarters component behind. The planning arrangement is assumed to have provided dual but independent operation of the postal and telegraphic functions around the single postal hall and counter with minimal space for mail sorting, telegraphic functions and staff facilities. The key alteration to the building concerns the enlargement and remodelling of the frontal component to