Bank Of Scotland, 26 Colquhoun Square, Helensburgh

The Bank of Scotland, located at 26 Colquhoun Square in Helensburgh, was likely designed by John Burnet Snr in 1861. This two-storey, three-bay building features a square plan and is constructed from stugged cream sandstone rubble, with ashlar on the south elevation and polished ashlar dressings. Key architectural elements include an ashlar plinth, cill courses, a mullioned eaves course, a cornice, a parapet, and rusticated quoins.

On the south elevation, which faces Colquhoun Square, the building has a symmetrical three-bay layout. The central entrance features a pilastered doorcase with an entablature, leading to a round-arched door with an architrave and a floreated keystone, along with a panelled fanlit door. Flanking the entrance are bipartite windows, and above, the first floor has a central window flanked by bipartites.

The west elevation includes a bipartite window at the ground floor and two widely spaced windows on the first floor, with a carved circular panel in the center inscribed with "UB 1861." The east elevation has a single window located on the outer right at the first floor. The north (rear) elevation features four bays at the first floor, with windows in three bays and a narrow vent in the second bay from the right.

The building is fitted with plate glass sash and case windows and has a grey slate piended roof.