St Olaf's Episcopalian Church And Rectory, 12 Dundas Crescent, Kirkwall

St Olaf's Episcopalian Church, built in 1874-5 by Alexander Ross, with a tower added in 1886 by T S Peace, is a hall church located at 12 Dundas Crescent, Kirkwall. A single-story rectory links to the right (south) side of the church, although this is not included in the listing.

The church is constructed of squared and snecked rubble stone with polished sandstone ashlar dressings. A base course, a heavy lintel course at the entrance, a string course dividing the tower stages, and an eaves course are all visible. Pointed-arched openings feature chamfered reveals, with moulded reveals to the main tripartite window. Long and short margins and quoins are also present.

The west (principal) elevation has a tripartite window with a taller central light to the main gable and a cinquefoil window set within a circular recess at the finialled gablehead above. There are boarded, two-leaf doors at the first stage of the tower on both the west and south elevations. Trefoil-headed windows are placed at each stage of the tower above the doors. The north (side) elevation has four bays, each containing a trefoil-headed bipartite window.

The church's interior features an open braced kingpost roof with round-arched braces supported on simple ashlar corbels, a boarded timber dado, and a carved timber chancel screen installed in 1897. The chancel has encaustic tiled flooring with floreate cast-iron supports for the timber rail. A timber-panelled and carved reredos, dating to around 1920, includes blind gothic fretwork in the upper panels. A stone arch on the north side of the chancel frames an organ by G M Holdich, built in 1881. A two-seat sedilia is located on the south wall of the chancel. There are also timber pews, an ogee-arched tabernacle to the east, a carved timber hexagonal pulpit, a hexagonal ashlar sandstone pedestal for the stone font, and a complete scheme of stained glass windows. These include a large window by Heaton, Butler & Bayne from 1931, depicting Faith, Hope, and Charity, as well as windows designed by James Balantine & Son (1883-1888) and A Ballantine and Gardiner, with later windows in the chancel dating to the late 19th century.

The boundary walls along the west side (Dundas Crescent) are low, constructed of squared rubble with a ridged ashlar cope. Decorative gothic cast-iron railings run along the boundary, supported by square-plan piers with a string course below a shallow cap. These piers have stop-chamfered edges.