7-9 Castle Street, Aberdeen

7-9 Castle Street in Aberdeen is a four-storey and attic Classical tenement building, constructed in 1810 by John Smith. It features a distinctive curved corner entrance bay and is located on a prominent corner site. The building is made of grey granite ashlar, with rubble at the rear. The ground floor has round-arched openings with a band course above, while the upper storeys have predominantly 12-pane timber sash and case windows, with plate glass on the ground floor.

The entrance includes a wide curved corner with a four-panel, two-leaf timber door, flanked by timber side panels and topped with an astragalled semicircular fanlight. Above, there are tripartite windows with narrow timber mullions and a decorative iron balcony on the first storey. The building also features pedimented and piended dormers. The Castle Street elevation includes an elliptical arched pend at the far right. The roof is a mansard style, covered with grey slate, and there are coped wallheads and gable stacks.