Columba Church Hall, King Street West, Helensburgh

Columba Church Hall, built in 1845, is a Gothic-style building designed by probably William Spence. It has a rectangular plan and is constructed from cream and pink sandstone rubble, with cream sandstone ashlar on the south entrance elevation. The hall features pointed-arch windows and offset diagonal buttresses that have saw-tooth coping and gablet caps.

On the south elevation facing King Street West, there is a central gable bay with a Tudor-arch doorway that has deep splayed reveals, a modern door, and a blind three-light window above. Flanking this are half-gable bays with blind single windows.

The west elevation has four regular windows and a flat-roofed later block that abuts the center. The roof is made of grey slate, with ashlar coped skews, cast-iron rainwater goods, and a tall parapet on the south elevation.