Heyn Memorial Hall, 215 Holywood Road, Belfast, County Antrim, BT4 2DR

Heyn Memorial Hall is a two-storey red brick parish hall built between 1928 and 1929 to designs by Belfast architect Robert Hanna Gibson and constructed by F. B. McKee & Co. The building was erected for St Mark's Church, Dundela and stands at the corner of Holywood Road and Sydenham Avenue.

The hall adopts a Tudor-style aesthetic with a half-hipped natural slate roof tiled with green slates, angled red-clay ridge tiles, and overhanging eaves. The walling is laid in stretcher bond. Two small hexagonal-plan pyramid-roofed ventilators with copper spires and louvred openings crown the roof. Semi-circular uPVC guttering and circular downpipes serve the structure. Plain barge boards finish the gables.

The building is rectangular in plan, oriented on a west-east axis, with projecting bays to north and south. A stone memorial plaque is set to the centre of the south elevation.

The principal south elevation features a two-bay two-storey half-hipped roof gable to the west end, with two-part windows to each bay at ground floor and a three-part window to the centre of the first floor. A two-storey two-bay projecting gable stands directly to the east, with a square-headed porch opening and main entrance door. A square-plan timber column marks the corner with a painted iron balustrade to the side. Red-clay brick paving laid in herringbone pattern surrounds the porch. The entrance door is a half-glazed timber double door. The eastern section comprises three double-storey hipped-roof projecting bays with four-part windows at high level, each with a single-storey flat-roofed outshot below. The westernmost outshot contains two two-part windows facing south and one two-part window facing east. The eastern outshot has a modern metal double door with windows to all three sides. The east bay includes a two-storey half-hipped roof bay and a projecting single-storey flat-roofed semi-circular bay with a multi-part window and three-part window to the first floor. A two-storey two-bay projecting gable stands directly to the east with a canted bay timber-mullioned oriel window to the first floor.

The west elevation displays three bays across two storeys with four-part windows at ground floor to each bay and a flat-headed lucarne (dormer built off the wall face) containing a three-part window to each bay at first floor.

The north elevation mirrors the complexity of the south, featuring two two-storey gables to the west, three projecting double-storey hipped-roof bays, and two modern single-storey flat-roofed outshots. Three one-and-a-half storey hipped-roof projecting bays have four-part windows at high level. A single-storey three-bay flat-roofed outshot to the western group includes a square-headed door to the first bay and two-part windows to the remainder. A modern single-storey flat-roofed outshot stands to the east end.

The rear east elevation contains a single canted bay with a large one-and-a-half storey timber-mullioned bay window.

Windows throughout are square-headed timber casements set flush with the wall face with no sills. Joinery details include timber-mullioned elements to certain windows and lucarnes.

The site is located to the northwest end of St Mark's Church grounds on the south side of Holywood Road. The former rectory, a red brick two-storey gabled building now used as parish offices, lies between the hall and the church. The grounds are partly lawned and partly tarmaced with a car park to the northwest. The site is enclosed by a dwarf sandstone wall with iron railings and rectangular piers to the north and a red brick dwarf wall with stone coping to the west; hedge and fencing bound the south and east sides.