Millbrook House, 21 Gransha Road, Lisleen, Comber, NEWTOWNARDS, County Down, BT23 5QA

Millbrook House is a symmetrical one-and-a-half storey three-bay detached house built around 1860, situated south of Gransha Road in the borough of Castlereagh. The house abuts an earlier single-storey dwelling to the rear, which dates from around 1830. The main house has a rectangular plan with a single-storey extension under a sloping roof added to the rear, itself abutted by the earlier dwelling which now forms a rear return.

The pitched natural slate roof is finished with terracotta ridge tiles and painted render chimneystacks bearing three terracotta pots. The walls are ruled-and-lined painted render with raised quoins and plinth. Plastic rainwater goods have been installed throughout.

The principal elevation faces north and features a central doorway flanked by two windows. The doorway retains its original six-panelled timber door with a cast-iron spider web fanlight above, set within a round-headed surround with keyblock and pilasters. The door is accessed by a single masonry step. Windows are replacement 3/9 timber casements set in moulded architraves with raised keyblock and projecting masonry sills.

The east elevation contains a replacement timber casement window at left. The south (rear) elevation is abutted at left by the single-storey former dwelling. To the right lies the single-storey extension under sloping roof, which has a replacement timber-sheeted door at left and a narrow timber casement at right. The east elevation of this extension has a single timber casement window. The west elevation has timber casement windows at attic level to right and at ground floor to far right.

The earlier dwelling to the rear predates 1830 and was originally thatched. The roof was raised around 1920 when the thatch was removed and replaced with slate. The dwelling has a pitched natural slate roof with terracotta ridge tiles and a single replacement yellow-brick chimneystack added in the 1920s. The walls are ruled-and-lined painted render with plastic rainwater goods throughout. Windows are replacement timber-framed casements. The dwelling is asymmetrically arranged with a replacement timber-sheeted door to the left of centre, flanked by windows to left and right (the latter being larger). To the right is an additional bay with a window, partially abutted to the east by the single-storey extension. The south gable is blank. The west elevation has windows at left and right.

The property sits in a rural setting surrounded by farmland. A mature lawned and shrubbed garden lies to the front with a central pathway leading to the entrance. A tarmacadamed drive to the northeast leads to the rear yard. Directly east of the house stands a free-standing slated lean-to; to the west is a roughcast-rendered single-storey barn. South of the yard is a one-and-a-half-storey barn abutted by a single-storey stable block, both with timber-sheeted doors fitted with cast-iron strap hinges. Further south are two large agricultural barns flanking a central yard. At the far south of the site are the walls of a single-span rubble stone bridge, no longer in use, which provides access to and likely predates the original house of the 1830s. An original wrought-iron farm gate provides access from the rear yard to agricultural land east of the house, which is bounded by a roughcast-rendered wall.