4 and 4a, St Nicholas Street

4 and 4A St Nicholas Street is a house that has been converted into shops. The building features an early 18th-century façade that conceals a 17th-century core, along with a 20th-century restored wing. It is constructed of painted brick with a random slate roof and has brick stacks at the rear. The structure has a central staircase plan and consists of two storeys, an attic, and a cellar.

The exterior has a three-window range with late 19th-century, 1/1 sash windows set beneath brick segmental arches. It also features moulded wood eaves and three roof dormers with 18th-century, 6/6 sash windows under moulded pediments. There are two 20th-century shop fronts with doorways in the center of the building; the left side has a half-glazed, one-panel door with a plain overlight, while the right side has a door with glazing bars in a moulded, pegged case, also under a plain overlight and a moulded flat hood. A brick band runs across the front, and there are ashlar sandstone quoins on the left side. The small wing at the rear is mainly a 20th-century restoration.

Inside No. 4, there is a late 18th-century dogleg staircase with turned balusters and a moulded string and rail leading to the attic, which has exposed 17th-century framing and a two-panel door. The first floor features panelling and chamfered ceiling beams, while the ground floor includes an 18th-century alcove and panelling, as well as ceiling coving. The cellar is lined with brick and stone and has 17th-century timber-framed partition walls and a two-panel door. In No. 4A on the ground floor, there is a late 19th-century kitchen range, along with 18th-century panelling and an overmantel.