4 Kilwinning Road, Irvine

4 Kilwinning Road in Irvine is a mid-19th century, two-storey, three-bay classical house featuring single-storey, one-bay pavilion wings on each side. The front is finished in painted ashlar, while one side is harled and painted, and the other side and rear are constructed from squared and snecked rubble stone. The building includes a base course, eaves band, cornice, wallhead, pilaster ends, ashlar dressings, and moulded margins.

The west elevation, which is the principal front, has a central modern entrance door that is recessed within a pilastered surround beneath a Greek Doric porch. This area features a plain architrave, triglyph frieze, and cornice. Above the entrance, there is a window on the first floor. The flanking bays have pilastered and corniced canted windows at the ground floor, with a window centered above on the first floor. The single-storey wings on the left and right are set back, with a window on the right and a garage door conversion on the left.

The south elevation shows a gable end with an advanced ground floor wing. The north elevation also features a gable end with an advanced ground floor wing, and there is a window on the right at the first floor. The east elevation includes a central projecting bay that houses the staircase, with a small window at ground level and a tall window above. To the right, there are French windows at ground level and a window above. An additional projecting bay has been added to the left of the staircase, which has harled windows on both the ground and first floors, and a window in the return to the left. The left bay features windows at both levels, and there is a window and modern door in the wing to the left. The building has plain margins, dark grey slate roofing, stone skews, and corniced ashlar gablehead stacks.

Inside, the inner porch features etched glass depictions of St Peter and St Paul. The property is surrounded by rubble stone boundary walls on the east, north, and south sides, with a low wall that has a coursed, tooled finish and coping on the west side, but no railings. The entrance is marked by double octagonal gatepiers.