23-25 East Princes Street, Rothesay, Bute

19-21 East Princes Street is a four-storey tenement building with an attic, designed in the French Baroque style by James Hamilton in 1876, with alterations made in the early 20th century. The building is symmetrical and forms part of a terrace that includes shops on the ground floor. It features prominent stylised giant order pilasters that group the seven bays in a pattern of 1-1-3-1-1. The exterior is constructed of coursed yellow sandstone ashlar with raised polished dressings, including a raised base course, architraved cill courses that are corbelled at the second floor, architraved string courses, dentilled corniced eaves, and a balustraded attic.

The first-floor windows have segmental-arched pediments above Corinthian columns, while the second-floor windows feature consoled cornices. Engaged Corinthian columns flank the architraved third-floor windows, and consoled pediments surmount the round-arched attic windows. The outer left and right sides have French pavilion roofs, with a round-arched pavilion roof at the center.

On the west elevation, there are pend entrances to the upper flats at ground level in the bays to the left and right of the center, along with a large blocked entrance at the center that was originally the access to the rear hall. The outer left bay contains pilastered shop premises, while the outer right bay has boarded timber shop premises. The fenestration is regular, featuring a blind consoled segmental-arched attic window at the center and single attic windows in the remaining bays. There are two oeil-de-beouf windows set in the central round-arched tower, topped by a corniced parapet that surmounts the towers in the outer bays.

The windows predominantly consist of plate glass in timber sash and case frames, although some have been replaced later. The roof is covered with graded grey slate, featuring fish-scale slate detailing on the French pavilion roofs. The building has corniced ashlar ridge and apex stacks, along with various circular chimney cans.