7, 9 Castle Street, Rothesay, Bute

7 and 9 Castle Street in Rothesay, Bute, is an earlier 19th-century building that was converted for office use in the later 20th century. This symmetrical, two-storey house with an attic features three bays and is designed in a classical style, with a projecting stair tower at the rear and a two-storey, single bay infill to the outer right. The exterior is finished in painted harl, with raised margins of yellow sandstone ashlar at the ground floor and painted at the first floor. It has a raised base course, a lintel course beneath corniced eaves, a painted blocking course, and prominent painted quoins. The ground floor has pedimented tripartite windows that include scrolled detailing at the base, stone mullions, and corbelled cills, along with a columnar entrance.

On the south (entrance) elevation, there is a two-leaf timber panelled door set within a central architraved surround, topped with a blind fanlight. The entrance features a projecting doorpiece with flanking detached Ionic columns, a full entablature, and a parapet with a stepped round-arched centre that surrounds a missing armorial panel. The ground floor has pedimented tripartite windows in the flanking bays, while all bays on the first floor have single windows. There are three-light canted dormers on the outer left and right, and a pedimented dormer at the centre, topped with a tapering finial. The infill section has a timber door at the ground floor and a single window aligned at the first floor.

All openings are fitted with two-pane timber sash and case windows. The roof is covered with grey slate, and the dormers are slate-hung with raised stone skews. The eastern side has a corniced ridge stack, while the western side has a missing stack. The interior has been converted for office use.