Oakmount, 16 Hillhead, Bonnyrigg

Oakmount is an earlier 19th-century house with subsequent alterations and additions. It is a symmetrical, 2-storey, 3-bay butterfly-plan house to which a single-storey, 3-bay garage has been added to the east. The house is built of stugged cream ashlar sandstone, with dressings in droved grey sandstone. Features include long and short quoins, raised margins and later fixed shutters to the first-floor windows, and deep eaves.

The south-east, or principal, elevation has a bowed central bay in the re-entrant angle. It features a round-arched doorway with a raised margin, a timber-panelled, two-leaf door with a semi-circular fanlight above, and a part-glazed timber-panelled vestibule door set behind. There is a window at the first floor above the doorway. A window is present at each floor in the bay to the right. Blinded windows are on each floor in the angled bay to the left. A coped, harled single-storey wall extends to the outer left, containing a doorway.

The west, or rear, elevation is irregular and three-bayed. A three-light, flat-roofed bow window is located at ground level in the left-hand bay, with a single window above. A bipartite, mullioned window (with the right side blinded) is at first floor in the central bay, and a tripartite, mullioned window is at ground level in the right-hand bay, with a window above.

The north, or side, elevation is also irregular and three-bayed. It features a window at ground level in the centre bay, a stair window above with a small opening to its left, and a window at ground level in the bay to the right. The right return of the garage is visible, with a modern timber door and two windows at ground level, and a window above.

The east elevation is gabled and largely blank, with a boarded entrance door set to the outer right and a later canopy above it. A gablehead stack is present. The modern, three-bay garage projects eastwards from the east wall.

The south elevation has a centrally placed window at ground level, and a window to the right at first floor.

The principal elevation features 12-pane timber sash and case windows. A variety of glazing patterns are found on the other elevations. The roof is piended and grey slate, with a flat roof on the garage. There are ashlar corniced gablehead stacks to the east and two ashlar corniced ridge stacks. Cast-iron rainwater goods are fitted.

Inside, the house has bowed double doors leading to a circular hall. Identical marble fireplaces are in the drawing room and dining room, although these have been painted. Panelled shutters are retained in the drawing and dining rooms.

Sandstone rubble boundary walls with an ashlar cope surround the property. Banded, square-plan gatepiers with pyramidal caps mark the entrance.