46 South Beach, Troon

46 South Beach in Troon is a mid-19th century, symmetrical single-storey house featuring three bays in a plain classical style. It has flanking single-storey, single-bay pavilions with piended roofs and a flat-roofed single-bay addition on the outer right. The building is constructed from squared and snecked tooled rubble sandstone with painted dressings. It has a raised base course, a lintel course beneath the corniced eaves, and a painted blocking course. The design includes narrow strip quoins, painted margins, projecting cills, and a pilastered entrance.

On the northeast elevation facing South Beach, there is a replacement timber door at the center, surrounded by a doorpiece with flanking pilasters, a plain frieze, a cornice, and a block pediment. The remaining bays to the left and right each have single windows, while the additional bay on the outer right contains a timber door.

The southwest elevation facing the Esplanade features a glazed addition on the outer right, with the remaining bays to the left being regularly fenestrated. The house has 12-pane timber sash and case glazing on the South Beach side, while modern glazing is present at the rear. The central block has a graded grey slate roof with raised stone skews, and the side pavilions have grey slate piended roofs. The rainwater goods have been replaced, and there are coped apex stacks on the northwest and southeast corners with octagonal cans.

The interior was not seen in 1997. The property is enclosed by low coped rubble boundary walls along South Beach, with painted square-plan piers topped with pyramidal caps. A taller random rubble wall encloses the site at the rear.