Sidlaw Hospital, Auchterhouse

The Sidlaw Hospital, now converted to flats, was designed by William Alexander and built in 1901. It is a large, basically rectangular, two-storey and attic building with a 19-bay main facade and lower, two-storey projections to the rear. The exterior is predominantly harled, with ashlar dressings and a slate roof. A base course, sill and lintel course at the first floor, and margined angles are prominent features. Windows are margined, with corbelled cills and bracketted cornices at the first floor. Some windows are canted, with bracketted half-timbered gables above, and there are gabled and piended dormers, though the windows now have uPVC glazing which is not original. Plain bargeboards, corniced stacks and pierced terracotta ridge tiles with finials at the gables are also present.

The south elevation is symmetrical. A three-bay block is slightly advanced at the centre, featuring a moulded three-centred arch doorpiece with a monogrammed keystone (now blocked and replaced with a window). A consoled balcony with wrought-iron balustrade overlooks a recessed window at the first floor, and a smaller balcony serves the attic window. Flanking bays are linked by the doorpiece and balcony, and each contains a two-story canted window with a half-timbered gable above. Seven bays are recessed on either side, mirroring each other. The left block features a slightly advanced gable with a ground-floor window, a corbelled first-floor canted window, a half-timbered gable with a window, and three windows on each floor; the second bay from the right is pedimented. Advanced gables are positioned at the far left and right, each with a two-story canted window.

The east and west gables are similar, each with two windows at ground and first floor levels, and arrow slit windows within the half-timbered gables. They also include a blank, recessed projection on one side.

The north elevation is symmetrical and features a single-storey entrance porch projecting at the centre, flanked by two-storey and attic blind gables. The main building has three bays on either side, flanked by two-storey, two-bay projecting gables at the far left and right, with further bays and projecting stair gables.

The interior has been largely reconstructed, but the original scale and platt main staircase with wrought-iron balusters remains.

Two square-section, pyramid-capped, cast-iron gatepiers, which originally adjoined South Lodge, are located nearby.