Rockbank, Low Askomil, Campbeltown

Rockbank is an early 19th century, two-storey house built over a raised basement, featuring a rectangular plan with flanking single-storey wings on both the east and west sides. The house has roughcast walls adorned with droved ashlar dressings and details, all painted. It includes a lintel course at the basement level, a string course, and a cornice at the eaves. The corners and windows are margined, with projecting cills.

On the south elevation facing Low Askomil, there is a stone stair that oversails the basement recess, leading to the entrance door at the center, which is accessed by a decorative cast-iron balustrade. The entrance features a classical doorpiece with pilasters, an entablature, and a blocking course, along with a door that has two vertical panels and an 8-pane fanlight above. Flanking the entrance are pedimented tripartite windows from the mid to later 19th century, which have pilaster-mullions and jambs. The west wing has a blind window, while the random rubble walls on either side have segmental-arched openings that are also infilled on the west side.

The windows throughout the house are timber sash and case, with plate glass at the basement (secured with iron bars) and principal floor, and 4-pane windows at the first floor and east wing. A notable feature is the 18-pane stair window located at the rear elevation. The roof is covered with grey slate and has a piended design, along with cast-iron gutters and downpipes. The wallhead stacks are made of ashlar, roughcast, and coped with octagonal cans, breaking the eaves on the side elevations.

Inside, most of the original fittings remain intact, including a stone staircase with cast-iron balusters and a timber handrail, panelled shutters, six-panel doors, chimneypieces, and decorative plasterwork in the hall.

The boundary walls include stugged square ashlar gatepiers that are corniced with domed caps. There are random rubble retaining walls to Low Askomil, at the rear of the house, and in the rear garden, which has a curved plan. Additionally, there is a random rubble boundary wall to the east and wrought-iron railing to the west.

At the rear of the property, there is a near-symmetrical arrangement of outbuildings.