6 The Diamond, Ballycastle, Co Antrim, BT54 6AW

This is a mid-19th century public house, built between 1840 and 1859, replacing an earlier 18th-century building. It forms the western end of a terrace of three buildings with matching ridge and eaves lines, located within the Ballycastle Conservation Area. The building was originally recorded on the 1857 Ordnance Survey map, although a smaller structure was present on the 1832 map. It was initially listed in 1981, but was subsequently delisted on March 1st, 2005.

The public house is three bays wide, three storeys high, with a long, two-storey return to the rear. The ground floor has a central six-panelled door, with a three-light, ten-pane window on each side. The top two panes of each window light are top-hung, the remainder fixed, and some panes are coloured. Window frames are in uPVC. Above the entrance door is a short framed fascia with Gothic lettering reading "The Diamond Bar". At the first floor, there are three two-light windows, slightly offset from the ground floor openings. Each light has eight panes, with the top two being top-hung; the frames are in uPVC and each window has a small window box. A circular Guinness sign is positioned between two of the first-floor windows. The second-floor windows are similar to those below, but slightly smaller. A shallow corbel course is visible under the eaves. A half-round gutter runs along the roofline. The roof is covered in natural slate, and the gable facing Fairhill Street is smooth and rendered, with two recently inserted small horizontal three-pane windows off-centre at ground floor level. A large chimney stack rises from the roof, with two pots visible.

The rear of the building features a long, flat-roofed return that occupies about half of the facade. A single-storey lean-to structure is situated between this return and Fairhill Street, with corrugated iron roofing, smooth rendered walls, and single windows at both first and second floor levels. The remainder of the walls are rendered in a mixture of smooth and roughcast finishes. A yard extends to the rear, enclosed by a high concrete block wall with a gateway to the street, which appears untidy. The building underwent alterations in 1977, when the original Georgian proportioned windows were replaced and enlarged.