Bryn Collen, including forecourt walls and railings

Bryn Collen comprises six terraced houses at numbers 66–76 Vale Street, known as Windsor Terrace. The houses are of brick construction with glazed brick facades. The upper four houses (66, 68, 70, 72) feature additional decorative banding in yellow and blue bricks, while all houses share a continuous slate roof with end and shared chimneys. The latter are staged, with banding to the upper four houses and oversailing and laced courses to numbers 74–76. The chimneys to numbers 68 and 70 have been reduced slightly. All houses have oversailing and corbelled eaves, with additional banding to all save the latter pair. The ground floor of each house is raised slightly above a basement floor and is accessed via a flight of low parapeted steps.

The upper four houses are arranged with symmetrical reflection: numbers 66 and 68 are reflected by numbers 70 and 72. Each unit is of 2 bays with arched entrances, those to the central two correspondingly paired. The central units have large segmentally-arched, tripartite windows with expressed keys and imposts to the arches. The outer two units have single-storey canted bay windows with flat, parapeted roofs. Recessed original doors feature tall glazed upper panels and plain-glazed segmental overlights. Plain Victorian sashes are used throughout. The second floor has two segmentally-arched windows to each of the central pair (numbers 68 and 70), and paired and single arched windows to the outer units (numbers 66 and 72), with banding at sill and springing level. Each unit has a large glazed dormer to the attic floor with hipped, slated roofs featuring oversailing, corbelled eaves and finials; arched lights are paired to the front and 4-light to the sides.

The lower pair (numbers 74 and 76) have similar entrances and 2-storey canted bays to the right and left respectively. These have hipped slate roofs and oversailing, corbelled eaves, with stone sillcourses returned onto the main facade as decorative terracotta banding. The left and right units respectively have single and paired first-floor sashes; number 74 has an additional entrance to the ground floor, similar to and immediately to the right of the main entrance, functioning as a through-passage door giving access to the rear. The second floor has paired small rectangular windows and paired arched windows to each unit, the latter above the bays. These are crowned by large gables with deep verges and cusped and pierced bargeboards featuring geometric pendant-finials, with decorative terracotta rosettes in the gable apexes. Plain sashes and projecting stone sills are used throughout.

Each house has low brick forecourt walls with sandstone copings; all save number 74 are surmounted by simple railings.