Commons Farm, 10 Councillors Road, Carrickfergus, Co. Antrim, BT38 9AQ

Commons Farm is a two-bay two-storey outbuilding built around 1880, located on the north side of Councillors Road in Carrickfergus. Originally constructed as a corn threshing barn, as evidenced by a timber floor hatch and traces of mill machinery, the building remains largely unaltered externally and forms part of an original farm courtyard that exemplifies an early nineteenth-century farm plan.

The main building is rectangular in plan with a single-storey extension to the east gable. The pitched roof is covered in natural slate with blue and black clay ridge tiles, featuring a single roof light to the south pitch and overhanging timber eaves with exposed rafter ends. Plain timber bargeboards are supported on exposed purlin ends. Half-round cast-iron rainwater goods drain the structure.

The walls are constructed of roughly coursed rubble, painted throughout, with brick window surrounds. The principal elevation faces north and contains a segmental-headed coach arch with timber sheeted doors to the left, surmounted by two windows. To the right are two timber sheeted doors, each with a square-headed window to the left. The first floor features a timber sheeted loft door with a window to its left. Round-headed 8-pane timber pivot casements with flush masonry cills and stepped brick surrounds form the remaining openings. The left gable is sheeted in asbestos.

A single-storey converted outbuilding abuts the left gable, featuring a pitched slated roof. The rear elevation contains three windows at first-floor level. The right gable is blank.

The left gable extension has been converted into a dwelling with extensive replacement materials throughout, including pitched roof with hips to the east, replacement roof tiles, uPVC rainwater goods, Velux rooflights, and uPVC windows. A red brick chimneystack with decorative octagonal clay pots has been added. The north elevation of this converted section contains double doors with three windows to the right. The south elevation contains double doors, a single window to the left, and two windows to the right.

The entire south elevation is surmounted by a lean-to slated canopy with rooflights, supported on cast-iron columns.

The building forms the south side of a traditional quadrangular farm courtyard, facing onto similarly detailed outbuildings with the farmhouse to the east. The courtyard is enclosed to the east by a coursed random rubble wall with piers and is accessed from the east by a lane from Councillors Road through an alcoved entrance with smooth rendered walls and cast-iron gates supported on square piers with pyramidal caps.

The building first appears on the third edition Ordnance Survey map of 1902. The Valuation Revisions of 1880 record "house, offices and land" occupied by Charles Stewart and leased from W. Duncan Wilson, valued at £10. A note states the farm was "built with loan from board of works and to be exempt for 7 years from 13th Jan 1873". By 1903, the occupier was revised to the representatives of Charles Stewart.