11 Trevor Hill, Newry, Co Down, BT34 1DN

11 Trevor Hill is the left-hand house of a pair of three-storey buildings with basement, fronting the east side of Trevor Hill in Newry. It is two bays wide and is listed Grade B1.

The house has a pitched natural slate roof with a skylight to the front pitch and a cement-rendered chimney on the left gable. Half-round metal rainwater goods with downpipe run down the left side. The façade walls are of squared granite rubble laid in courses with a projecting eaves course.

At ground floor level, the left side of the façade features a flanking wall with a semi-elliptical headed coachway leading to the rear yard. This wall is rendered, and the arch is finely dressed granite with raised imposts and keyblock; the arch is infilled with a large sheet metal door. To the right, six granite steps rise to a paved threshold with a wrought iron boot scraper at the top. The main entrance door is a modern twelve-panelled painted timber door, flanked by a pair of fluted Doric demi-columns with an entablature above (featuring a patera to the frieze) and a plain glass fanlight. All are set within a segmental headed opening with painted dressed granite trim; the right pier is shared with the coach arch of the adjoining house.

The windows throughout are dressed granite with cills, stepped brick quoins, soldier course heads, and painted rendered reveals. At ground floor left of the front door are two 1/1 sliding sash windows with metal grilles over. A passage runs across the front of the basement, lit by two 8/4 sliding sash windows directly in line with those above, fitted with metal security bars. The first floor has three equally spaced 1/1 sliding sash windows. The second floor has three 6/3 sliding sashes of diminished height, in line with those below. Modern ventilation grilles have been inserted between the two right-hand windows on the upper floors. A clear wall break occurs at right of the right-hand windows on upper floors, but not at ground floor.

A basement and steps are enclosed by railings consisting of spiked plain rails and cast iron urn-topped posts resting on a granite plinth. Additional railings run up the steps to the entrance between the coach arch and front door.

The right gable is a party wall with the adjoining house. The left gable is cement-rendered. At ground floor on the left is a modern six-panelled timber door with transom over. At right is a modern fifteen-pane door with three-pane transom over, fitted with a modern security grille. Between these doors is a modern six-paned timber casement window with concrete cill and metal security grill. At first floor is a six-paned modern casement window with concrete cill.

The rear elevation is cement-rendered. A single-storey extension abuts the ground floor. At the first floor left is a 1/1 sliding sash window. At second floor is a 1/1 sliding sash window at left and a 6/3 sash at right. The middle bay contains half-landing windows set in semicircular headed openings: between ground and first floor is a 6/1 sliding sash window with spoked head; above is a 6/6 sash also with spoked head. The extension has a flat roof and cement-rendered walls, with a modern timber door and window on the right cheek. A modern rendered wall encloses the rear yard. A metal door leads through to a derelict outbuilding in the rear yard.