6 Fitzwilliam Street, Belfast, Co. Antrim, BT9 6AW

A three-storey terrace house of late Georgian style, built circa 1849, forming part of a short block of four matching properties. The terrace is situated at the eastern end of the south side of Fitzwilliam Street, with the QUB Students' Union to the south and University Road (containing Lanyon's original university building) to the west. The front façade faces north.

The ground floor features a four-panel timber door with rectangular fanlight containing margin panes. The doorway has a thin pilaster jamb to the left and a much thicker pilaster to the right, which serves as a pier separating it from the doorway of No.8. Above the doorway is a hood mounted on simple, functional-looking metal brackets, which merges with the hood of No.8 and is finished with timber cladding and a simple cornice. Two steps lead to the doorway. To the left are two sash windows with Georgian panes (six over six) and moulded surrounds. The ground floor level is finished in rusticated render with a chamfered base and cill band, painted. The remaining front façade is brick, topped with a dentilled cornice.

The first floor has two sash windows without surrounds, wider spaced and not in line with those below, resting on a cill band shared across the terrace. The second floor has two similar windows, in line with the first floor windows but slightly shorter. The windows maintain the Georgian character of the building.

The rear façade of the entire terrace is plain, unpainted cement render. Numbers 6 and 8 share a low, two-storey gabled return. The east face of the return has a plain sheeted doorway at ground floor centre, flanked by two small windows to the left and one to the right, all with modern timber frames and security bars. A small plain sash window with security bars is sited to the far right on the first floor. The south-facing gable end has a single canted first floor oriel window to the right (belonging to No.6) and a single sash window to the left (belonging to No.8). The oriel is timber-constructed with plain sash windows and security bars to each cant, supported on metal brackets, with hipped lead-sheeted roofs.

The main rear façade has sash windows to the right at each floor, all in line, with the second floor window slightly shorter. The ground floor frame has Georgian panes (six over six); the upper two are plain. Ground floor and first floor windows have security bars. To the left, above the return, are two stairwell landing windows with sash frames. The upper window is much shorter, positioned close to the eaves, with three panes over three, while that below is plain.

The main roof is gabled, finished in Bangor blue slate with rendered parapets to each gable, with a small Velux window to the rear of each property. Chimney stacks serve the entire terrace: the eastern stack (No.2) is rendered with tall uniform cream-coloured clay pots; the broader central stack (Nos.4–6) is partly rendered with a variety of pots; the western stack (No.8) is brick with no pots. The return roof comprises two gabled roofs with a valley between them (concealed behind an encompassing end gable), both covered in Bangor blue slate with a brick-built end stack bearing one original-looking octagonal pot. The return roof has a Velux window to its inner side. The main house has cast iron rainwater goods; the return is fitted with mostly PVC rainwater goods.