30-34 Princes Street West, Helensburgh

30-34 Princes Street West in Helensburgh is an early 19th-century, three-storey, three-bay tenement building that features a modern shop at the ground level. The structure is made of cream and red sandstone rubble, with snecked sections and ashlar dressings on the south elevation. It has raised margins, an eaves lintel course, and quoin strips.

On the south elevation facing Princes Street, there is a door in the center flanked by modern plate glass shop windows and a deep fascia. The first and second floors each have three symmetrically arranged windows.

The north elevation at the rear has three bays and includes a projecting turnpike stair turret in the center, with a door on the right return. The windows are plate glass sash and case, with modern windows on the upper storey. The roof is covered with grey slate.

Additionally, there is a single-storey, four-bay detached wash-house block at the rear. It has two windows in the center and doors in the outer bays, featuring a single pitch slate roof and a single flue at the center. The wash-house is currently in poor condition.