Rock Brook

Detached five-bay two-storey country house, built c.1780. Now out of use and derelict. Pitched natural slate roof with rendered chimneystacks to either end (north and south) and the remains of early cast-iron rainwater goods. Roof partially collapsed to the north end. Roughcast rendered walls over smooth rendered plinth. Square-headed window openings having cut stone sills and six-over-six pane timber sliding sash windows to the ground floor openings and three-over-three pane timber sliding sash windows over to first floor openings. Central round-headed doorcase having cut limestone block-and-start surround, timber panelled door and plain fanlight over. Complex of outbuildings to the rear (northwest). Located to the northwest of Ballynacarrigy with main gates and remains of former lodge to the southwest (15307011). Complex of outbuildings to the west.

A handsome and well-proportioned country house, of late eighteenth-century appearance, which retains its early form, character and a great deal of its early fabric despite being partially collapsed to the north and out of use for a considerable period of time. The good quality block-and-start doorcase is a noteworthy feature that enlivens the front façade of this building. This building was the home of an Isdell Esq., in 1783. This building remains an important element of the architectural heritage of the Ballynacarrigy area. It forms the centrepiece of a group of associated structures along with the gates and former gate lodge (15407011) to the southwest and the outbuildings to the west.