Saint Columba's College — Kilmashogue Lane

Detached five-bay two-storey over part raised basement country house, built 1740, on a square plan centred on (single-storey) prostyle tetrastyle portico to ground floor; seven-bay full-height side elevations with five-bay full-height rear (west) elevation. Sold, 1849, to accommodate alternative use. Renovated, 2007, to accommodate continued alternative use. Replacement flat-topped hipped slate roof on a quadrangular plan behind parapet with ridge tiles, paired rendered central chimney stacks on cut-granite chamfered cushion courses on rendered bases having cut-granite stringcourses below chamfered capping supporting terracotta tapered pots, and concealed rainwater goods retaining cast-iron octagonal or ogee hoppers and downpipes. Roughcast walls on moulded cushion course on cut-granite plinth with rusticated cut-granite quoins to corners supporting "Cyma Recta"- or "Cyma Reversa"-detailed cornice on blind frieze below parapet. Square-headed central door opening in tripartite arrangement behind (single-storey) prostyle tetrastyle portico approached by flight of eight cut-granite steps with egg-and-dart-detailed columns supporting dentilated cornice on "Patera"-detailed frieze below parapet, and moulded surround framing glazed timber panelled double doors having sidelights. Square-headed window opening in tripartite arrangement (first floor) with cut-limestone sill, and cut-limestone surround with panelled pilasters supporting hood moulding on foliate-detailed consoles framing one-over-one timber sash window having two-over-two sidelights. Square-headed window openings with cut-granite sills, and concealed dressings framing six-over-six timber sash windows without horns. Square-headed window openings to rear (west) elevation centred on round-headed window opening in tripartite arrangement (half-landing) with cut-granite sills, and concealed dressings framing six-over-six or four-over-two (top floor) timber sash windows without horns centred on six-over-six timber sash window having two-over-two sidelights below fanlight. Interior including (ground floor): timber panelled central hall with decorative plasterwork cornice to ceiling; segmental-headed door opening into staircase hall with carved timber Classical-style surround framing timber panelled double doors having fanlight; double-height staircase hall retaining carved timber surrounds to door openings framing timber panelled doors, cantilevered staircase on a dog leg plan with wrought iron-detailed balusters supporting carved timber banister terminating in volute, carved timber surrounds to door openings to half-landing framing timber panelled doors centred on carved timber Classical-style surround to window opening framing timber panelled reveals or shutters on panelled risers, carved timber surrounds to door openings to landing framing timber panelled doors, and segmental vaulted ceiling on decorative plasterwork cornice centred on decorative plasterwork ceiling roses; reception room (south-east) retaining carved timber surround to door opening framing timber panelled door with carved timber surrounds to window openings framing timber panelled shutters on panelled risers, and decorative plasterwork cornice to ceiling; reception room (north-east) retaining carved timber surround to door opening framing timber panelled door with carved timber surrounds to window openings framing timber panelled shutters on panelled risers, and decorative plasterwork cornice to ceiling; and carved timber surrounds to door openings to remainder framing timber panelled doors with carved timber surrounds to window openings framing timber panelled shutters on panelled risers. Set in landscaped grounds.