Moygannon House, Rostrevor Road, Warrenpoint, Newry, Co Down, BT34 3RU

Moygannon House is a single-storey early 19th-century house with semi-basement, set in mature grounds on the north side of Rostrevor Road. The house has a hipped U-shaped natural slate roof with half-round metal rainwater goods on advanced eaves. All chimneys are rendered with chimney pots. The east roof has two chimneys, one to either side of its central bay. The west roof has four chimneys: one on the north gable and one between each of the bays. Walls are cement-dashed and painted, with a smooth base course to the façade only.

The front elevation faces south and only the ground floor is exposed. It is three bays wide, with the central bay containing the main entrance. Two granite steps with moulded nosings lead to a pair of narrow four-panelled doors. Each panel is horizontal, raised and fielded, with the second and fourth panels from the bottom being smaller than the others. The doors are flanked by full-height two-over-two horizontally divided sliding sash sidelights with painted granite cills. Above the doorway and sidelights is a shallow segmental fanlight with sunburst leaded glazing and smooth render architrave. On the wall to left and right are modern coach arches. The left and right bays of the façade are almost completely abutted by a bowed bay, detailed as the walls of the main block with similar eaves. Each has a pitched natural slate roof which curves with the wall below. Each has a tripartite front window consisting of a central six-over-six sash flanked by narrower two-over-two sashes, with smooth rendered segmental-headed architrave and plain masonry tympanum. Each bowed bay has single six-over-six sash windows to each side, with similar cills and flat-headed architraves.

The left elevation is four bays wide and its basement is fully exposed. The left bay appears to be a later addition and has two one-over-one sashes to each floor. The second bay from left has two six-over-three sashes to the basement (the left one is an exposed box and the right one is larger with a higher cill level). Above, at ground floor, is a tripartite window with a six-over-six sash flanked by two-over-two sashes. The third bay from left has a glazed timber door to the left and a six-over-three sash to the right in the basement. At ground floor there is a pair of narrow glazed doors, each four-paned, with a transom over each. This is served by a flight of concrete steps rising from ground level, enclosed by a plain metal balustrade. The right bay has a six-over-three sash at basement left and a six-over-six sash to ground floor centre. All basement windows have granite cills and security bars to the front.

The north gable of the west wing is abutted to centre and right by a slightly lower single-bay extension with a pitched natural slate roof and walls as the main block. Its west elevation is flush with the west elevation of the main block and has two small one-over-one sashes at ground floor level. The basement is blank. The basement gable is abutted by a higher ground level and its first floor has a modern uPVC window. Its east-facing elevation is exposed at basement and has a tongue-and-groove sheeted door. The ground floor is blank. The exposed left part of the north gable and the left part of this elevation are abutted by a plain narrow structure, open to the basement, with walls as the main block and a flat roof. It possibly contains a water tank. The east-facing wall of the west wing is exposed to the right (north) end and has a two-over-two sash window to each floor.

The central courtyard is separated from the rear by a link block joining the two wings, aligned west-east, with a flat roof and walls as the main block. Its south face fronts the inner yard and its north face is abutted to the right by a two-storey lean-to and to the left by a single-storey porch. The exposed part at ground floor left has a small modern timber window. The two-storey lean-to at right has a shallow roof and a two-over-two window to each floor of its north wall. Its left (east) cheek is blank and its right (west) cheek abuts the west wing. The porch has a pitched natural slate roof, plain bargeboard and a tongue-and-groove sheeted door. Its west cheek abuts the two-storey lean-to and its left cheek abuts the garage. The north end wall of the east wing is blank and abutted to the basement by a lean-to garage block with a natural slated lean-to roof. The roof overhangs and the front wall has large garage doors two cars wide. Its east-facing cheek is dashed as the house and the basement has a pair of two-by-three paned casement windows in a common opening.

The east elevation is three bays wide and the basement is exposed. The left bay is blank but has marks in the render suggesting it once had a first floor window. It has a single window to the central and right bays. Both ground floor windows are six-over-six sashes. All basement windows are six-over-three sashes with painted granite cills and bars not aligned with those above.

The inner yard of the house has an open basement. Its south side (front block) has a six-over-six sash at ground floor and a glazed timber door to the basement with a transom over. The north side (link block) has three one-over-one sashes in a single opening and a pair of four-over-two sashes in a single opening at basement. The west and east sides are each abutted by lean-to extensions under cat-slides off the main roofs. The lean-to on the west side of the yard (west wing) does not abut the basement wall at right and in that recess there is a pair of four-over-four sashes. The lean-to has a segmental-headed archway at left with a tiny one-over-one window and a six-panelled door (top and bottom ones horizontal). At ground floor there is a six-over-three sash at left side with a tiny one-over-one sash to its left. The lean-to on the east side of the yard (east wing) does not abut the basement wall at left and in that recess there is a pair of four-over-two sashes and a tongue-and-groove sheeted door on the left cheek into the front block. The lean-to has a modern timber casement window at ground floor left, a tongue-and-groove sheeted door at basement right, and a pair of four-over-two sashes at ground floor right.

The grounds are extensive and planted with mature trees and shrubs. A large lawned area to the south of the house is enclosed to the front by modern gates and rendered walling. To the northeast of the house is the farmyard and to the northwest is the walled garden.

To the northeast of the house is the former farmyard, surrounded by a high rubble stone wall. The east wall is the party wall with the yard of the adjacent house. The yard is accessed through a pair of large flat iron gates on its south elevation. To the left on entry is a one-and-a-half storey outbuilding aligned north-south. The yard is partially enclosed to its east and west sides by similar outbuildings. All outbuilding walls are rendered random rubble, and doors are tongue-and-groove sheeted. The north-south outbuilding has a pitched natural slate roof, half-hipped to the north end. Its north wall has a semi-elliptical doorway to the ground floor with a pair of tongue-and-groove sheeted doors. Above in the gable is a six-over-three sliding sash window, partially collapsed. The rear (south) gable is blank. The east outbuilding has a hipped roof, part natural slate and part artificial, with advanced eaves course supporting half-round cast-iron rainwater goods. Its end gables are covered in dense foliage. Its west-facing wall has the openings. Most windows are gone but their frames suggest they were sliding sashes. There are louvred vents to loft level. Its east wall ties into the east boundary wall. The west outbuilding has a lean-to natural slate roof sloping into the yard. The west elevation is the boundary wall and ground level embanks up to attic floor where there are three small window openings. The south gable has a doorway.

To the northwest of the house is a walled garden enclosed by high rubble stone walls, with a number of small lean-to outbuildings on its external north elevation. The lean-tos are in rubble stone with shallow masonry roofs.