11 Main Street, Greyabbey, Newtownards, Co. Down, BT22 2NE

11 Main Street is a plain two-storey terrace house dating from approximately 1865, situated on the south-east side of Main Street in Greyabbey.

The house is constructed with a lined render finish to the front facade and rough cast to the rear. The main roof is gabled and covered with Bangor blue slates, with two yellow brick chimneys. Cast iron rainwater goods are fitted throughout.

The front (north-west) elevation is asymmetrical. A modern panelled and glazed door with plain fanlight is positioned slightly right of centre. To the left are two sash windows with Georgian panes on the ground floor, with one sash window and four evenly spaced sash windows to the first floor. On the rear, a central full-height flat-roofed return with modern windows dating from around the 1930s projects from the main structure. To the left of this return is a single-storey lean-to extension featuring a modern glazed door to the right and a sash window to the left. Directly above the lean-to on the main house are two modern windows from around the 1930s, the right-hand example filled with a stained glass landscape scene. To the right of the full-height extension, at the far right of the main house, is a ground-floor sash window matching those to the front elevation, and a modern two-pane window to the first floor.

To the rear yard are small single-storey outbuildings, now with Bangor blue slated gabled roofs and various modern windows. According to the owner, these outbuildings may formerly have been used as a slaughterhouse and include what is known as a 'trivet'—a type of gutter designed to allow blood to drain away from animal carcasses.

Ordnance Survey maps from 1834 and circa 1860 show a smaller building occupying roughly the site of No. 11a and part of the site of No. 11, suggesting that the present houses at Nos. 11 and 13 date from after 1860. The owner believes his house dates from circa 1865, as likely does No. 13. No. 11a functioned as the village post office until recently.