Presbytery, St Sylvester's Roman Catholic Church, Institution Road, Elgin

St Sylvester's Roman Catholic Church, located on Institution Road in Elgin, was designed by Thomas Mackenzie and built between 1843 and 1844, with alterations made by William J. Devlin in 1932. This Gothic-style church features a rectangular plan with four bays, oriented north to south, and has a south gable facing Institution Road. The exterior is constructed of tooled ashlar with polished ashlar dressings and has a steeply pitched slate roof. The west elevation includes three cusped lancet windows and a gabled porch at the southwest corner, which has a moulded pointed arched entrance. A large traceried window, styled after 14th-century designs, fills the south gable, topped by a blind and ornamented bull's eye. A small buttressed stair turret at the southwest angle has a truncated spire, while the skews are mainly saw-tooth with cross finials.

Inside, the church retains a simple and mostly original interior, featuring a Gothic wooden screen that separates the entrance and baptistry from the seating area. The roof is supported by braced rafters with diagonal joists, and the chancel roof has scissor braces, although the chancel furnishings are modern. The font is circular, made of white marble, supported by a squat central column and six outer grey marble colonnettes, all standing on a hexagonal white marble base.

The presbytery, also designed by Thomas Mackenzie and built in the same years, is constructed of tooled ashlar with rubble flanks and ashlar dressings. It is a two-storey, asymmetrical building with five bays, arranged in an L-plan that connects to the north gable of the church via a linking passageway. The long asymmetrical elevation to the west features an entrance and gable, three gabled first-floor windows that rise through the wallhead, and 12- and 16-pane sash windows. The presbytery also has an octagonal ridge chimney stack, saw-tooth skews, triangular skewputts, and a slate roof.

The school, located at the Institution Road frontage and designed by George Melvin in 1872, is a single-storey Gothic building made of tooled ashlar with polished ashlar dressings. It has a three-bay hall facing south towards Institution Road and is linked at the west gable to St Sylvester's Church. The school features two square hood-moulded bipartite windows with Gothic tracery, an advanced gabled porch to the right with a pointed hood-mould and an inscription above the door, and a blind shaped oculus above. The roof has saw-tooth skews, a louvred ventilation gablet, a metal ridge ventilator, and is covered with slate and tiled ridges.