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

55 Troy Park is a small two-storey modernist house built in 1951 to the design of Corr & McCormick architects. It is situated within a mature, well-planned garden featuring a central irregular courtyard of granite cobbles, and demonstrates consistent attention to detail in both architectural design and material selection.

The building employs local materials—stone, wet dash render, and timber—alongside the international influences of the modern movement, creating a distinctly local character. The ground floor is constructed of stone and wet dash render with extensive glazing, whilst the first floor features stained timber cladding. A low-pitch felt roof with central brick chimney on the ridge and cast iron rainwater goods with ogee gutter completes the external envelope.

The main south-facing elevation is characterised by a long metal window running the full length of the original façade, with circular steel columns incorporated into the glazing and exposed to the exterior. An angle above provides permanent shuttering for a painted concrete beam concealed behind the timber cladding of the first floor. Two large four-pane PVC windows at first floor are positioned symmetrically about the building's centreline. The west elevation features a flat-roofed single-storey porch constructed of local whinstone with a curved wall, supported by a small-diameter (75mm) steel column at its outer edge. The entrance door is glazed with sidelights, the corner panes rounded in 1950s manner. A single four-pane PVC window sits above at first floor within the timber-clad gable, its central mullion deliberately enlarged to conceal a wall behind. An oil tank completes the curve of the porch wall, positioned on a concrete plinth 450mm from the adjacent path. The north elevation, facing the rear yard, contains three first-floor windows and a long narrow window at ground level serving the kitchen, along with two small frosted windows lighting the water closet and cloaks room. Ground level here is finished in painted brick rather than render. The east elevation presents a composition of stepping roofs visible from Culmore Road beyond the high stone boundary wall, with a single four-pane PVC window at first floor divided by a large mullion.

Notable interior features include a low window positioned over the kitchen sink, original kitchen cupboards, living room glazing, flooring, and staircase—the majority of original fittings remain intact. The extension added in 1982 comprises a glazed corridor with an attached metal greenhouse and conservatory exposed on the south elevation, connected to the main house via a small flat roof with a metal glazed door of architectural interest. The extension is timber-clad with wet dash render below, featuring a large plain painted timber window at first floor overlooking the yard and a small rendered room beneath opening to a concrete yard at the rear.

The building was the residence of F H Corr, partner in Corr & McCormick, one of the most influential post-war Irish architectural firms, and displays many details characteristic of their work. Corr remained resident until his death in the mid-1980s. The grounds were professionally landscaped at the time of the 1982 extension. The present occupant has made no material alterations to the property.

The garden contains a former 1863 Londonderry City Boundary post, an ornamental stone feature of which only two examples remain within the city.