Quintin House, 22 Quintin Bay Road, Ballymarter, Portaferry, Co Down, BT22 1QB

Quintin House is a large, formal two-storey farmhouse with a hipped roof, dating to around 1890. It stands on a slight slope to the west of Quintin Bay Road, approximately three miles south-east of Portaferry, Co Down. The building has been substantially altered and extended in the 20th century.

The front elevation faces south and is symmetrical. At the centre of the ground floor is a large flat-roofed porch with a PVC glazed door to the east face. The door has plain sidelights and a fanlight, all framed with fluted pilasters and brackets supporting a moulded eaves course that runs around the entire porch, with an entablature featuring a moulded keystone. The south face of the porch has a double two-pane PVC window with a top-hung upper pane separated by a thin column acting as a mullion, with a moulded bracket and base. The window surround is cement render with simple decoration and a moulded keystone. The west face carries a similar window. To the left and right of the porch are windows of comparable design. The first floor has three similar but slightly shorter windows across the front. All window frames are PVC throughout.

The west facade includes a small gabled conservatory or sun room at ground floor level, with a four-pane PVC window to the left on the main facade as its front, and two similar windows to the first floor. The upper half of each conservatory face is glazed. The east facade has two windows to the ground floor (as on the front) and two to the first floor (matching the first-floor front windows). A large two-storey hipped-roof return projects to the rear. This extension has windows of various sizes to its east and west faces and a glazed door to the west. The rear elevation has ground and first-floor windows to the left side of the projecting extension, with a similar first-floor window to the right of the extension and a smaller window (with the same type of surround as elsewhere) to the ground floor.

The entire facade is finished in roughcast render with moulded chamfered quoins and a chamfered plinth. Both the main roof and extension roof are covered in 'Thru-tone' slates and clay ridge tiles. The eaves are boxed, projecting 150mm on the main house and 400mm on the extension. Two central potless yellow brick chimneys with simple corbelling rise through the main roof. PVC gutters and downspouts serve the building.

Ordnance Survey maps of 1834 and 1861 show a long rectangular building on this site. The present structure probably dates from around 1890 to 1900. According to the current owner, the front porch is not original but was added sometime after 1922. The conservatory was added around 1990. A large farmyard with mainly modern farm buildings stands to the rear.