43 Sandgate, Ayr

43 Sandgate in Ayr is a former Post Office building designed by Walter Wood Robertson in 1893, with alterations and additions made by W T Oldrieve in 1907. This two-storey, four-bay Baronial structure features a conical tower and is constructed from squared and snecked, bull-faced red sandstone, with ashlar quoins. The building has cill courses on both floors and a central string course.

The northwest elevation, which serves as the entrance, includes a door located in the conical-roofed penultimate bay on the left. This entrance features a pilaster moulded corniced doorpiece, an ovolo-moulded frieze, a two-leaf timber door, and a letterbox fanlight. Above the door, there is a horizontal rectangular light set in a segmental pedimented head. The first floor has two narrow windows, and the tower has a rope-moulded string course at the lower frieze, topped with a finial at the apex.

To the outer left, there are single windows at both the ground and first floors, with the first-floor window breaking the eaves to form a gable that features a decorative roundel in the tympanum. The penultimate bay to the right has an advanced crow-stepped gable, with a pair of two-light mullioned and transomed windows at the ground floor and a corbelled three-light mullioned and transomed window at the first floor. This bay also has a segmental pediment broken by an armorial panel, along with another segmental pediment above.

The outer right bay features an advanced ground floor corbelled two-light mullioned and transomed window with a pedimented head, and a first-floor two-light transomed and mullioned window that breaks the eaves to form a gable, complete with finials at the apex and skews. Between the penultimate and outer bay on the right, there is an ogee-roofed cupola topped with a ball finial.

The building showcases a variety of small-pane glazing patterns in its timber windows. The roof is made of grey slate, featuring crow-stepped skews, wallhead stacks, and circular cans. Inside, the interior has been much altered but retains original ceiling beams and a dentilled frieze.