Post Office

This is an Italianate style Post Office, dating from the 18th century and composed of two joined sections. The northern range is two storeys with an attic, and has a hipped slate roof with a raised lantern light. The southern range is three storeys and has a gabled slate roof.

The two-window northern range has an arcaded lower storey with round-headed windows and a doorway on the left side, all featuring keys and an impost band. The double doors are replacements within the original opening, but the overlight and remaining windows retain their original marginal iron glazing bars. The windows have a corbelled sill. The upper storey has stilted heads with keystones, impost and sill bands, and two-light casements below transoms. A central clock is located below the impost band. A deep bracketed cornice sits below the parapet, which is topped by a Royal Arms.

The two-window southern range projects slightly in front of the northern range. On the left side of the lower storey is a round-headed window with marginal iron glazing bars and a corbelled sill. To the right is a tripartite sash window with fluted shafts and architrave. A tablet on the right side of this window commemorates Sir William Preece (1834-1913), the chief engineer to the Post Office and a pioneer of wireless telegraphy, who was a native of Caernarfon. The middle storey has four-pane sash windows under keyed segmental heads with impost bands, similar to the northern range. The upper storey has plainer four-pane sash windows and corbelled sills. The eaves are bracketed.

The left-hand elevation facing Chapel Street has five tall segmental-headed windows incorporating hopper lights in the lower storey. The wall is then aligned differently with a smaller window, followed by a pair of taller windows further to the left. Above the tall windows are shorter segmental-headed upper-storey four-pane sash windows; however, there is no window set back from the right end.

A four-window rear wing is set further back. This wing is constructed of snecked rock-faced stone with Bath stone dressings around six-pane horned sash windows, and a slate roof with skylights. It is single-storey, except for the left-hand side, which boasts a second storey under a coped gable. This upper storey contains a six-pane sash window and a small-pane horned sash window in the side wall overlooking the roof of the main wing. The right gable end facing Segontium Terrace is pebble-dashed and has four-pane sash windows. The interior has been modernised.