6-10 Union Street, Campbeltown

6-10 Union Street in Campbeltown is a three-storey and attic tenement building from the later 18th century, featuring a rectangular plan and seven bays. The shopfront has droved and painted ashlar piers, with a polished ashlar frieze above red sandstone walls that are cherry-caulked. The building includes a partial base course, a wide lintel course at the shopfront, a cill course over the frieze at the first floor, a cill course at the second floor, and an eaves course.

The entrance door to the shop is located at the second bay, with a shop window to the left and an entrance door to the common stair on the right. The shop to the right has a central door flanked by shop windows. The third floor features windows with raised margins and projecting cills. The upper floors have regular fenestration, and there are round-arched niches at the first and second floors of the bay to the left of the center.

The rear elevation is roughcast and consists of four bays, with an apsidal stair tower that breaks the eaves at the second bay. The shopfront has two-pane plate glass windows, while the upper floors have 12-pane timber sash and case windows. The entrance features a two-leaf glazed timber shop door in the second bay and a timber part-railed pedestrian gate leading to the common stair entrance. The building has a grey slate roof that curves over the stair tower, with slate-hung piend-roofed dormers breaking the eaves. The first bay has a timber dormer, while the fourth and seventh bays have stone dormers. At the rear elevation, there are slate-hung piend-roofed timber dormers flanking the stair tower, which also have 9-pane timber sash and case windows. The building features a roughcast, coped, multi-flue apex stack with circular cans and skew copes located between the second and third bays, along with mutual apex stacks at the outer left and right ends.