Lady Cathcart's House, 22 Sandgate, Ayr

Lady Cathcart's House is a town house located at 22 Sandgate in Ayr, dating from around 1600 with later alterations. It is a two- and three-storey building with attics, featuring a near rectangular plan and two bays, situated on a corner site. The exterior is finished in painted render with square-headed openings.

On the southeast elevation, there is a recessed central shop entrance with a two-leaf glazed timber door and flanking shop windows. The upper floors have regular fenestration, while the attic windows break the eaves, forming architraved dormers. The left dormer is inscribed with 'S 19 H' and the right dormer with 'B 91 T'.

The northeast elevation, facing Cathcart Street, consists of ten bays arranged in a 2-3-5 grouping. There are two openings on all floors of the three-storey and attic section, with a two-bay section to the left that is mostly infilled, except for the ground floor on the right and the attic on the left. The entrance is located at the outer right of the three-bay section, which is two-storey with an attic, featuring a timber door and a single window to the left at ground level. The outer left bay has single windows on all floors. The ground floor of the five-bay section to the right has two timber doors at the third and fourth bays, with a single window at the ground of the penultimate bay to the left. There are small infilled openings to the right and left of the entrances, and regular fenestration at the first floor, with some bays alternately infilled. The attic features two windows that break the eaves to form dormers.

The building has a grey slate roof with crowstepped gables, corniced gablehead stacks, and circular cans. Inside, the first-floor flat includes an elaborate aumbry with a shield motif within an arch above.