18A Rubislaw Den South, 18, Aberdeen

18A Rubislaw Den South is a villa built in 1901 by Robert Gordon Wilson. It is a two-storey building with an attic and features three bays. The exterior is made of tooled coursed grey granite, with contrasting light grey long and short dressings that are finely finished on the south elevation, while the rest of the building is constructed from granite rubble. Notable architectural elements include a base course, a dividing string course, overhanging eaves, and timber bargeboards.

The south elevation, which is the principal facade, is asymmetrical. It has a chamfered doorway at the center, accessed by stone steps, featuring a two-leaf panelled timber door and a three-pane fanlight above. There is a window above the door on the first floor, and to the right, there are tripartite windows on both the ground and first floors. The left side has a slightly advanced gabled bay with a five-light canted window at the ground floor, a parapet that forms a balcony on the first floor, and a tripartite window on both the first and attic floors, with the attic window supported by granite brackets.

The east elevation is also asymmetrical, featuring a gabled bay to the left and stone steps leading to the doorway of 18A Rubislaw Den South at the center, with irregular fenestration on the rest of the elevation.

The north elevation is asymmetrical as well, with a two-storey gabled wing on the left. It has a doorway near the center flanked by a small window to the left and irregular fenestration on both sides. There is a window on the ground floor of the center bay and a round-arched window on the first floor above. To the right, there is a three-light canted window with a piended roof on the ground floor and a tripartite window on the first floor. Modern skylights have been added to the attic floor.

The west elevation is asymmetrical, featuring a gabled section to the right and a single window on the ground floor to the right.

The villa predominantly has timber sash and case windows with small-pane upper sashes. The roof is covered with piended and gabled grey slate, featuring lead ridges, and has coped gablehead stacks with circular cans. The rainwater goods are made of cast iron.

The interiors were not seen in 2000. The property also includes square-plan gatepiers with pyramidal caps on the south side, with a low coped granite wall between them, and granite and brick coped rubble walls surrounding the remainder of the property.