Nos 417, 419, 421, 423 & 425 Abergele Road and No 1 Princess Road

Nos 417, 419, 421, 423, and 425 Abergele Road, along with No 1 Princess Road, form a notable group of buildings in Old Colwyn. The large structure at the corner of Princess Road, which includes Nos 417-425, is likely the earliest of the group and was originally built as a single shop with living accommodation. It now consists of a terrace of six shops with accommodation above, although it has been subdivided into two shops and accommodation. The buildings are constructed of rock-faced coursed and squared rubble with ashlar dressings, topped with slate roofs featuring red tiled cresting. Nos 417-425 have stone axial stacks, while the adjoining terrace has brick end wall stacks.

Nos 417-425 is a three-storey building with a two-window range facing Abergele Road and a three-window return on Princess Road. The ground floor features a shop front along Abergele Road and two bays on the return elevation, which has a canted angle. The windows are designed with slim columns as mullions and narrow upper panes. The roof is supported by cast iron columns, and there is an ornamental gable at the angle, filled with a delicate and ornate pierced cast-iron panel topped with a finial. The outer gables above the shop front on Abergele Road are advanced and feature oriel windows. The wide doorway is set in a porch, and the upper storeys have sash windows divided by slim stone mullions. There are also squared bay windows with sashes divided by stone mullions in the oriel gable facing Abergele Road.

On the left side of the Princess Road elevation, there is a wider gable with a canted oriel window featuring sashes on the first floor and a two-pane sash window above. The narrow central bay has paired sashes on the ground floor and a two-pane sash window on the upper storeys, with the top window breaking through the eaves line as a gabled dormer. The Abergele Road elevation mirrors this with a similar canted oriel window and a two-pane sash window above, beneath a wide dormer gable. The gables throughout the building are adorned with fretted bargeboards.