21 St Catherine's Place, Kirkwall

22 St Catherine's Place in Kirkwall is a pair of two-storey, three-bay houses built around 1805, with some later alterations and additions. They feature a shared central crow-stepped gable, a pitched-roof entrance porch at Number 21, and a single-storey lean-to addition on the east gable. The rear elevation abuts Numbers 23 and 24, which are listed separately, and the exterior is harled.

On the north elevations, Number 21 (to the west) has a window in the entrance porch at ground level in the central bay, with a modern timber-panelled door on the right side and a window on the left. There is a window on each floor in the flanking bays. Number 22 (to the east) features a deep-set modern timber-panelled door at ground level in the central bay, with a window on each floor in the flanking bays and a deep-set boarded door in the lean-to addition on the outer left.

The west elevation facing St Catherine's Place has a window, offset to the right of centre, on each floor, with a gablehead stack above. The east elevation includes a bipartite window in the lean-to addition at ground level, offset to the right, and a window at the first floor, offset to the left, also with a gablehead stack above.

Number 21 has modern timber-framed windows with top-hung upper lights and replacement uPVC windows, while Number 22 retains traditional two-pane timber sash and case windows. The roofs are traditionally covered with graded stone tiles, with purple Welsh slate on the lean-to addition, complemented by stone ridges, stone skews, and harled, corniced gablehead and ridge stacks. The rainwater goods are made of uPVC.

The interiors were not seen in 1998. There is also a small single-storey rubble lean-to shed to the east, featuring boarded doors, a corrugated-iron roof, and cast-iron rainwater goods.