Dovecot, Colstoun House

The site contains stables and a coach house dating to the early 19th century, possibly designed by Patrick Brown in 1808, built in a classical style. It adjoins later 19th-century dwellings and a cylindrical dovecot from the 18th century.

The stable and coach house is built of random rubble with harl pointing, featuring raised dressed margins. The north elevation has a symmetrical five-bay facade, with a base and eaves course and rusticated quoins. The central bay projects and is pedimented, containing an infilled arch with rusticated quoins, voussoirs, a keystone, and a louvred oculus above. There are two windows flanking the south side of the central bay and an infilled door and window on the north side. The north gable similarly has a base and eaves course, a central blind window with a dummy stone transom, while the south gable features a single-storey garage that projects. The south-facing elevation has two arched doorways with boarded double doors, keystones, and impost blocks, while the workshop on the south side features a glazed double door and a glazed dormer window above, accessed by a timber forestair. A workshop to the southern side has a glazed double door and a dormer-headed glazed entryway above, leading to a loft.

Windows were originally small-paned. The roof is piended and covered with graded grey slates, with two pointed, louvred vents in the ridge. A small brick chimney has been added to the north roofslope.

The adjacent stables houses consist of roughly symmetrical, three dwellings with a seven-bay facade built of grey harl with ashlar dressings. The north elevation features two four-panel doors with letterbox fanlights, flanked by two sets of bipartite windows. To the east is a bipartite window and a single window, while a bipartite window and two single windows are located to the west. The first floor has three gabled dormers breaking the eaves. The south elevation has a single four-panel door with a letterbox fanlight, five ground-floor windows, six gabled dormers above breaking the eaves, and two stair windows. A single small window is in the west gable. The fenestration is timber sash and case windows with four panes. The roof is piended and covered with grey slate, with projecting eaves. Two large skylights are present in the north roofslope, and there are three harled stacks on the south elevation, topped with plain cans.

The dovecot is constructed of harled rubble with red sandstone dressings and a band/rat course. It is a tall, cylindrical structure with a boarded door to the south elevation. There is a lighting opening in the upper part with five entrance holes. It has a conical roof covered in grey Scotch slate, with projecting eaves, a decorative timber cap, and a weathervane.