Airdoch, 43 Thornly Park Avenue, Paisley

Airdoch is a 2-storey house with an attic and a single-storey wing, built in 1938 by architects H Cook and A Hamilton, with an extension added in 1966. This L-plan house features a crowstepped design that reflects Scottish 17th century revival architecture and is located on a corner site. The exterior is harled and includes an eaves course, corbels, and raked cills.

The west elevation is symmetrical, with rounded outer angles at the ground level that transition to square above. The central feature is a conical-roofed semicircular bay that contains three windows on each floor. The flanking bays have windows on both floors, with the left ground floor window being slightly larger and out of symmetry. The first-floor windows are closer to the centre and break the eaves into catslide dormerheads, with two ridge stacks positioned above.

The east elevation features a bowed outshot in the centre bay, which includes a raised banded doorway with a boarded timber door. There is an offset window to the right above the door and a smaller window on the right return. The right bay has a single window at the ground level and a catslide-roofed bipartite window above. To the left, there is a single-storey gable from the projecting wing that has three windows on the return to the right and a bipartite window above, similar to the right bay. The centre has a traditional rooflight flanked by smaller modern rooflights.

The north elevation is gabled, featuring windows on the left at the ground level and in the centre at the first floor and attic. The south elevation displays regular fenestration in the gabled structure, with a single-storey wing projecting at the outer right.

The windows are timber sash and case with 8- and 12-pane glazing patterns. The roof is covered with grey slates, and the chimney stacks are coped and harled with cans. The skews are ashlar-coped with block skewputts. The interior was not inspected in 2001.