15 St. Colman’s Park, Newry, Co Down, BT34 2BX

15 St. Colman's Park, Newry, is a three-storey granite terraced house with basement, two bays wide, dating from the 1820s–1830s. It is the third house up from the bottom of a seven-house terrace that slopes down St. Colman's Park. The building forms part of a cohesive terrace on one side of the square, initiated as mid-19th century town planning by James McAllister, who also erected the block at the corner with John Mitchel Place.

The building is constructed of squared rubble granite brought to courses with a pitched natural slate roof. It sits at the same height as number 13, slightly raised above number 17. A rendered chimney projects from the left party wall, with half-round metal guttering and downpipe at left. The right gable is abutted by the neighbouring building; the exposed left gable section is cement rendered.

At ground floor right is a reproduction four-panel painted timber door with a small rectangular transom light over. The door's head and jambs were originally cement rendered but were removed at survey to reveal brickwork beneath. Over the door opening is a projecting entablature supported on scrolled consoles at the top of the jambs; both are modern reproductions in cast cement. A boot scraper stands to the right of the door. To the left of the door is an 8/8 sliding sash window. Below it, the brick head of an infilled basement window is visible. At first floor are two 6/6 sliding sash windows aligned with the ground floor openings. At second floor are three smaller 3/3 sash windows. All windows are modern reproductions with granite cills and cement-rendered heads and stepped jambs over brick. Three-piece keystoned lintels sit above the ground and first floor window heads. The wrought iron railings that formerly ran along the front over a basement passage have been removed from their chamfered granite plinth.

At the rear, walls are unrendered with half-round metal rainwater goods. No trace of an external passage across the former basement remains. A modern one-storey extension abuts the left side. On the rear elevation, at ground floor right is a 6/6 sliding sash window, with another at first floor; the second floor window has been removed. At left, windows to both half-landings were undergoing replacement with replicas at the time of survey. Window openings have brick heads and stepped jambs; some have three-piece keystoned lintels above. The extension has a monopitched roof in corrugated asbestos, cement rendered walls, a metal-framed window to the back wall, and a modern door on the right cheek.

An outbuilding along the back of the yard forms part of a continuous block running the length of the terrace. This two-storey structure has a natural slate pitched gable roof and random rubble granite walls. Rainwater goods are missing from both roof slopes. At left on the north-facing elevation is a segmental-headed brick-trimmed coach arch with a pair of tongue-and-groove sheeted doors. Above this arch is a smaller tongue-and-groove sheeted loading door. At right on each floor is an infilled ventilation slit. Both gables are abutted by neighbouring buildings. On the yard elevation at ground floor is a door at right and a window at left, with an identical opening directly above at first floor. Both window openings lack frames.

The building is shown on the 1835 Ordnance Survey map as part of McAllister's Terrace, which originally comprised seven houses (numbers 1, 3, 5, 7, 13, 15, and 17); numbers 1, 3, and 5 are now demolished. In the 1835 valuation, the property belonged to James McAllister and was recorded as unfinished, implying construction was still underway but likely completed shortly thereafter.