1 Cockburn Street, Edinburgh

1 Cockburn Street in Edinburgh is a three-storey and attic Scots Baronial corner building, designed by architects Peddie and Kinnear between 1859 and 1861. Originally built as the Cockburn Hotel, it now serves as offices. The structure features four bays facing Market Street and one bay on Cockburn Street, with a circular entrance tower at the corner that is corbelled to a rectangular cap-house in the attic.

The exterior is constructed from squared and snecked lightly stugged sandstone, accented with polished dressings. A moulded string course runs along the ground floor, rising over the entrance, which includes a carved panel depicting a profile bust of Lord Cockburn. The building has crowstepped gables with apex stacks and scrolled details on the skews. The windows are framed in stop-chamfered, roll-moulded surrounds. The entrance door, located at the base of the tower, features a border-glazed fanlight in a roll-moulded surround. The northeast and southwest sides have finialled dormers, and there is an engaged two-storey circular tourelle with an ogee roof that is corbelled out at the northeast re-entrant angle.

On the southwest elevation facing Cockburn Street, there is a quadripartite bowed window in the re-entrant angle, topped with cast-iron brattishing at the parapet. A moulded string course rises to curve over an attic window in the gable, which displays a monogram (PK).

The Market Street elevation presents three regularly spaced bays on the right, featuring stone-mullioned bipartite windows. There is a bracketed balcony with decorative cast-iron railings and a rectangular two-light oriel window with decorative brattishing on the first floor. Below the corbel table in the attic is a carved sign reading "THE COCKBURN HOTEL," along with three finialled gabled dormer-headed windows that break the eaves. The left side has a projecting gabled bay with rounded corners, corbelled to a square at the attic level, and includes a bipartite window in the basement, a tripartite window on the ground floor, and a two-storey canted oriel that is corbelled out to the first and second floors, along with a small stone-mullioned bipartite window in the gable.

The property features decorative cast-iron railings around the basement area on Market Street. The windows are predominantly made of plate glass in timber sash and case frames, and the roof is covered with grey slates. The building has corniced wallhead and gablehead stacks with circular cans.