21-45 Railway Street, Comber, Co. Down, BT23 5HG

Two storey terrace of approximately 1880 set on the west side of Railway Street, to the west of Comber town centre, containing 13 houses numbered 21 to 45.

The properties from No. 23 to No. 45 are largely identical. The front (east) façade of each has a doorway to the ground floor on the left, a window to the right, and two similar windows to the first floor. Each doorway is encased with pilasters, frieze lintel and cornice. Most have panelled doors, apart from Nos. 23, 27, 31 and 41 which have modern glazed or PVC varieties. Plain fanlights sit above each door. The windows have segmental arch heads, except those to the ground floor of Nos. 43 and 45 which have been recently enlarged. All windows have modern timber or PVC frames apart from those to Nos. 27 and 41 which have sashes with the original horizontal glazing bars to No. 27's.

The rear of the terrace is slightly more varied. Apart from No. 45 (which has a large modern full height extension and single storey lean-to) and No. 21 (a larger house whose rear is obscured by a high yard wall), all houses have a doorway to the right on the ground floor with a window to the left. To the first floor is a similar window along with, in many of the houses, a much smaller one either to the right or left. Nos. 27, 37 and 41 do not have a second smaller window to the first floor, whilst No. 41 alone has an extra small window to the ground floor. Most rear doors are of plain timber sheeted variety, though some are stable doors (Nos. 23, 33–37) and some have small glazed panels (Nos. 23, 33, 37). Nos. 25, 29 and 31 have modern style doors with greater glazing, and Nos. 33–41 have fanlights of slightly varying size. The window frames are modern in both PVC and timber, though the two larger windows to No. 41 have retained their original sash versions with horizontal glazing bars. There is a first floor window with modern frame to the left on the south gable of No. 45.

The front façade and gables are finished in lined render and painted, with chamfered quoins at either end of the terrace. The whole of the rear is finished in rough cast (painted only in a few areas), whilst the rear of No. 45 is finished in painted lined render. The roof of the entire terrace is covered in Bangor blue slates with 15 chimney stacks, most in a combination of red and yellow brick with a few rebuilt solely in red brick. No. 29 has a small Velux window to the rear. A mixture of cast iron and PVC rainwater goods is present, the latter mainly to the rear. Each property has a low rendered garden wall to the front with a mixture of iron and timber gates of varying vintage.

No. 21, at the south end of the terrace, is double the size of its neighbours and appears originally to have been two properties. To the ground floor of the front façade is a roughly central large plain flat roofed projecting porch with a modern door to the front and modern windows to the sides. To the left of this is a single storey flat roofed canted bay with modern windows to each side. To the right of the porch is a window opening as to the front of the rest of the terrace, with four similar windows to the first floor, all with modern frames. The rear was obscured by a high wall, from which three unevenly spaced windows to the first floor were visible. The outer windows have modern frames but the middle one has a sash frame with margin panes and coloured glass.

The terrace is set on a slight incline with Nos. 21–31 positioned at a lower level. Remnants of stone built outbuildings survive to the rears of some properties, which once contained toilets.