48 Main Street, Crumlin, Co Antrim, BT29 4UR

48 Main Street is an early Victorian building of the 1840s–1850s that retains most of its original front elevation but has undergone inappropriate alterations to the rear and interior that have significantly compromised its character.

The building is a symmetrical two-storey structure, three windows wide, with a central doorway flanked by single-storey canted bays on each side. Its north-facing main entrance is set back slightly from the pavement, with the area in front of each bay enclosed by original cast iron railings (some damaged) on coved stone plinth walls; these enclosed areas are surfaced in concrete, and a slightly ramped path of small pavings leads from the pavement to an original granolithic front doorstep.

The roof is finished in Bangor blue slates in regular courses. The building abuts the higher gable of number 50 to the right and is continuous with number 46 to the left. A modern chimney of concrete brickwork stands at the left extremity. Cast iron guttering runs across the front eaves, discharging into a cast iron downpipe in front of the adjoining building to the left.

The walls are smooth rendered, lined and blocked, and painted white, with raised quoins to the left extremity. A moulded cornice and moulded plinth are continuous around the canted bays.

The ground floor features a central doorway set in a segmentally arched moulded surround with a fluted keystone and panelled pilasters. A rectangular metal plaque above the doorway bears the inscription "G.A.H. Lockhart LLB Solicitor". The ground floor bay to the left has a hipped roof, apparently finished with asbestos slates in regular courses with lead rolls to the ridges, a moulded cornice with concealed gutter, and a circular cast iron downpipe. The walls of this bay are smooth cement rendered and lined, with wooden-framed windows set on deep projecting stone cills. The windows are rectangular timber vertically hung sliding sash with 1-over-1 configuration to the canted sides and 2-over-2 to the front face, all with horns and flat wooden soffits to their heads; some rot is visible to the woodwork. The bay to the right is similar. The front door is rectangular, glazed and panelled with 9 panes and a bowed front to the glazing bars; it is modern, painted, with a modern metal handle and letterbox.

The first floor has three rectangular timber vertically hung sliding sash windows, each 1-over-1 with horns and exposed sash boxes. These are set in aedicule surrounds incorporating triangular pediments, curved brackets, panelled pilasters, and brackets under cills, although one bracket is missing to the left-hand window.

The first floor and roofspace above it are now in the ownership of number 50 Main Street. The rear elevation comprises a two-storey main block with a two-storey gabled return projecting from it (the return is also in ownership of number 50). The main block has a roof of Bangor blue slates in regular courses and a chimney of concrete brickwork. An original metal rooflight is present. The wall is rendered with dry dash of white chippings. One small window to the left-hand side, tucked under the eaves, appears to be a rectangular timber fixed light.

The building's precise date of construction is unknown, though a building appears on the Ordnance Survey map of 1832–1833; the style of the present building suggests a rebuilding in the early Victorian period. It was listed in 1974 and subsequently subdivided between lower and upper floors, with the ground floor sold and the upper floor retained as a link with the adjacent house at number 50. The house was historically known as "Ulsterville Cottage", though that name does not appear anywhere on the building. The building was delisted on 13 March 2002.