Secession Chapel, 13 Infirmary Street, Edinburgh

The Secession Chapel, located at 13 Infirmary Street in Edinburgh, was designed by Thomas Brown in 1822, with later additions made in 1896. This former church, now converted into offices, is a three-storey, five-bay, symmetrical building with a rectangular plan in the Classical style. The main façade features a central three-bay section with a pediment and a projecting flat-roofed ground floor added in 1896. The street-facing elevation is constructed of cream and grey sandstone ashlar, while the rear is built with rubble, incorporating some ashlar margins. The building has a deep base course, a cill course, and a deep cornice, with some bipartite openings on the east side.

The principal south elevation showcases the projecting flat-roofed ground floor, which includes a central, pedimented doorpiece with a keystone, flanked by paired Doric pilasters. The entrance features a two-leaf timber panelled door with a four-light fanlight above. The bays are separated by paired Doric pilasters, and there are some moulded architraves present. A balustraded parapet crowns the building, with three central key-stoned round-arched window openings from 1896 located on the first storey.

The windows exhibit a variety of glazing patterns, including some six-pane over plate glass timber sash and case windows, as well as fixed glazing with top hoppers. The roof is piended and covered with grey slate.

Inside, the chapel has been comprehensively altered, as observed in 2007. Some original features remain, such as timber dado panelling and a dog-leg stair with cast-iron barley sugar twist balusters and a timber handrail. There is also some dentilled cornicing at the upper storey.

The property is enclosed by a high rubble boundary wall to the east, topped with flat coping.