55 Troy Park, Culmore Road, Londonderry, BT48 7RL

55 Troy Park is a two-storey modern movement house situated on Culmore Road in a mature, well-planned garden with a central irregular courtyard of granite cobbles.

The main structure comprises a ground floor of stone and wet dash render with extensive glazing, and a first floor clad in stained timber. A low-pitched felt roof with central brick chimney on the ridge is finished with cast iron rainwater goods and ogee guttering.

The south-facing main elevation features a long metal window running the full length of the original façade, with circular steel columns incorporated into and exposed through the glazing. An angle above provides permanent shuttering for a painted concrete beam beneath the timber cladding of the first floor. Two large symmetrical four-pane PVC windows at first floor are centred on the block. An extension to the east contains a glazed corridor and metal greenhouse or conservatory exposed on the south elevation, with the garden rising to a small patio at the corridor level.

The main entrance is located to the west, contained within a flat-roofed single-storey porch. The roof projects beyond the porch structure, supported on a small-diameter (75mm) steel column. The door is glazed with sidelights, with corners rounded in 1950s manner. The porch is constructed from a curving whinstone wall (local stone) overhung by the flat felt roof. The west elevation above the porch has a single four-pane PVC window in the timber-clad first-floor gable; the central mullion is larger than the others to conceal a wall behind. Where the curved stone wall ends and returns to the main façade, a large oil tank continues the curve back into the elevation to the same height as the stone, though it stands on a concrete plinth 450mm from the adjacent path. Ground level rises across this section; a one-metre-wide path following the curve of porch and tank cuts into the slope to maintain level, retained by a vertical stone wall matching the porch. Rough granite steps at the façade rise from the path to a strip of planting.

The path continues beneath a room-width extension from the main building to a concrete yard at the rear. This extension is clad in timber with wet dash below, featuring a large plain painted timber window at first floor overlooking the yard and a small rendered room at ground level opening onto the yard. The north elevation facing the yard has three first-floor windows and a long narrow kitchen window at ground level, with two small frosted windows lighting the water closet and cloaks room. Ground level is finished in painted brick rather than render. A more recent eastern extension is rendered without openings. The link between main house and eastern extension is a small flat roof that preserves the original building's timber cladding undisturbed; at this point is a small metal glazed door detailed with particular care.

The east elevation, designed to be viewed from Culmore Road beyond the high stone wall separating Troy Park from the road, appears as a series of stepping roofs amongst trees. Like the west elevation, a single four-pane PVC window at first floor is divided by a large mullion. Cladding timbers on the gables are horizontal, whilst those on the north and south elevations are vertical. The extension features a small off-centre bay with PVC window capped by a felt pitched roof matching that over the main structure.