18 Riverside, Antrim, BT41 4BH

18 Riverside is an early to mid-19th century terrace house, built between 1840 and 1859 as part of a three-house terrace occupying the north end. The building first appears on the Ordnance Survey map of 1857. It retains two Gothic arched openings to the front but is otherwise of little architectural or historic interest.

The house is a 2-storey, 3-bay structure with its main entrance facing east. The east elevation features a hipped roof of Bangor blue slates in regular courses with one red brick chimney carrying three cast iron pots and what appears to be a cast iron gutter. The walling is smooth cement rendered, lined and blocked, with a plain plinth. Two vertical strips of rusticated quoins project from the facade: one at the right-hand extremity and another between the first and second bays of windows. Three windows occupy the first floor—rectangular timber frames with 6-paned fixed lights and 3-pane top-hung vents, set on projecting concrete cills. A similar window sits to the right-hand end of the ground floor. To its left, a window with a Gothic pattern glazed fanlight in a Gothic arched opening (later replacement woodwork) adjoins a doorway containing a rectangular timber panelled door with a leaded glazed fanlight in a matching Gothic arched opening.

The north elevation is roofed with Bangor blue slates and rendered as the east face, with a vertical strip of rusticated quoins projecting at the left-hand extremity. Two first-floor windows match those on the east side. A single-storey porch projects from the ground floor, featuring a lean-to roof of synthetic slates, PVC gutter and downpipe, and smooth cement rendered walls with oversailing eaves carrying timber soffits, eaves board, and barge boards. The porch has one window in its east side (modern timber), a glazed and panelled timber doorway to the north, and a rectangular 2-light timber casement window (with fixed and opening lights) to the west.

The rear elevation faces the river which flows immediately behind the building. The main block is roofed in Bangor blue slates with wet-dash rendered walling and what appears to be a PVC gutter. One first-floor window (rectangular timber, top-hung vent) and two ground-floor windows of rectangular timber remain. A small single-storey projection cantilevered out from the main wall on the left-hand side has a hipped roof and one rectangular 2-light window. The rear of the building includes a single-storey cantilevered projection extending over the river.

The terrace stands directly facing the pavement and street, with its rear elevations sited tight against the river. A small yard lies to one side. The building is situated within a conservation area and was delisted from the heritage register on 23 December 2005.