Clydesdale Bank, 10, 12 James Street, Helensburgh

The Clydesdale Bank, located at 10 and 12 James Street in Helensburgh, was built in 1857 and is a two-storey, three-bay classical bank. It features cream sandstone rubble with ashlar detailing on the west elevation. The building has a base course, a string course on the west side, raised margins, an eaves course, and paired bracketed eaves.

On the west entrance elevation, there is an ashlar porch at the center supported by Scamozzi Ionic columns, with an entablature and a plain doorway. Flanking the porch are slightly advanced tripartite windows, each topped with shallow pediments and adorned with wreath and garland decoration in the tympani. The first floor has three symmetrically arranged windows. To the right, there is a single-storey wing with a bipartite window, and there are additional windows at the ground and first floors on the return to the left. The left side features a recessed wing with a doorway and a window on the first floor.

The building includes a variety of plate glass sash and case windows and is topped with a grey slate roof, which has a corniced end stack to the right with moulded cans.