Rectory, St Michael's Church, William Street, Helensburgh

The Rectory of St Michael's Church, located on William Street in Helensburgh, was built in 1857. This two-storey and attic villa features three bays and is constructed from red and grey sandstone rubble with ashlar dressings. It has a base course, raised margins, and ashlar mullions on tripartite windows, along with chamfered arrises, overhanging eaves, and decorative bargeboards.

The west elevation, which serves as the entrance, has an advanced gabled bay to the left and a gabled stone porch at the center, set on a diagonal line within the re-entrant angle. The porch features a shouldered-arch doorway with a boarded door adorned with decorative iron hinges, and a recessed quatrrefoil panel at the gablehead, along with a decorative bargeboard. To the left of the doorway is a narrow window. Inside, there is a half-glazed vestibule door with etched glazing inscribed 'Helensburgh Parsonage Erected 1857'. Above this is a window on the first floor. To the right, there is a corniced tripartite window at ground level, and above it, a dormer-headed window with a gable that breaks the eaves, an apron, and a bargeboard. The taller bay on the outer left features a slightly advanced tripartite window at ground level with an ashlar half-piend coping apron above a corniced window, and a small window in the attic above.

The south elevation has windows on the outer right and left at ground level, with similarly detailed windows on the first floor, including an off-centre right window between the two.

On the east elevation, there are two windows in the center and to the right at both ground and first floors. Adjoining this elevation is a church hall at the northeast angle, along with a single-storey flat-roofed wing that has a door on the outer left and a window to the right, as well as a modern single-storey block extending to the east.

The north elevation features an off-centre left door with a hoodmould, and a stair window at the first floor, also with a hoodmould, which contains a fixed six-pane sash and case with four-pane glazing.

The building showcases a variety of glazing patterns, predominantly six-pane sash and case windows with four-pane lower sashes and two-pane upper sashes. The roof is finished with grey slate, featuring a roof-light on the west side and two gabled dormers on the same elevation.