61-65 Princes Street West, Helensburgh

24 John Street in Helensburgh is an early 20th-century, two-storey symmetrical tenement that features shops facing Princes Street West. The building is constructed from coursed and squared cream sandstone with polished ashlar dressings. It has a base course, a deep pulvinated fascia on the south elevation, a cornice between the ground and first floors, a cill course, and architraved and corniced windows on the first floor. The windows are ashlar mullioned, and there are eaves and lintel courses, along with a cornice and corbelled angles at the ground.

On the north elevation facing Princes Street, there are three shops, with the original shop front located on the right. The central shop has a door to the right and a shop window to the left. The left shop features a tripartite front with a doorway in the center, a window to the left, and a partly blocked window to the right. The right shop has a tripartite front with two-leaf glazed doors in the center, a timber shop gate, and flanking shop windows. Above, there is a bipartite window at the first and second floors, with single windows on either side. The outer bays are flanked by two-storey bowed oriels, which have roll-moulding on the arrises, a dentilled cornice, and scrolled decoration above.

The west elevation, which is the return of the north wing, features a central doorway at ground level with flanking windows, a shop window on the outer left, and a bipartite window on the outer right. There are also bipartite windows off-centre to the left and outer right at the first and second floors, along with a window off-centre to the right and outer left on the same floors. To the outer right, there is a slightly lower three-storey, eight-bay tenement with two bipartite windows at ground, first, and second floors, single windows flanking each floor, and doorways on either side. The building has plate glass sash and case windows, a grey-green slate roof, and tall corniced ashlar stacks.