19-21 Main Street, Castlederg, Co Tyrone, BT81 7AS

A detached three-storey house built circa 1820 and substantially remodelled with an additional storey around 1860, situated on the west side of Main Street in Castlederg. The building is rectangular in plan facing east with a T-shaped return extending to the west, accompanied by single-storey lean-to extensions filling the re-entrant angles and a single-storey flat-roofed extension at the west of the return.

The principal east-facing elevation contains three bays, with the central bay recessed to accommodate the main entrance flanked by windows. The left bay features a modern shop front. Both outer bays display V-jointed rock-faced quoins at projecting corners. The upper storeys contain five windows arranged across the elevation. Windows throughout are 6/6 timber sliding-sashes with projecting cill courses and diminished heights at first and second floors; moulded architraves appear only on the principal elevation.

The principal entrance comprises double-leaf panelled doors with weatherboards, flanked by timber pilasters and surmounted by a radial fanlight. This is contained within a later secondary surround featuring fluted pilasters, a moulded archivolt and keyblock detail, with flanking spandrels and moulded architraves. The recessed shop front is supported on two cast-iron columns.

The roofing is hipped with natural slate and blue-black clay ridge tiles. The walls are ruled-and-lined rendered with a projecting cill course and projecting smooth rendered plinth; V-jointed rock-faced quoins appear at ground floor and V-jointed reticulated rusticated quoins at first and second floors. Deep overhanging eaves are supported on moulded timber brackets. Six smooth rendered corbelled chimneysstacks rise from the roof, and cast-iron ogee-profile rainwater goods are installed throughout.

The south elevation contains a projecting smooth rendered pier at its right supporting a timber-sheeted fence that encloses the yard to the west. A single second-floor window occupies the centre of this elevation.

The rear elevation, where exposed, displays a bowed bay added circa 1870 at its left, containing three windows at each floor with the central window diminished. Two first and second-floor windows occupy the right section. The north gable contains a single first-floor window to the right.

The two-storey return, built circa 1820 but not remodelled to include a second storey circa 1860, has a hipped natural slate roof with blue-black clay ridge tiles, stone corbelled eaves, and cast-iron rainwater goods. Walls are ruled-and-lined rendered with 6/6 timber sliding-sash windows with projecting painted masonry cills. The south elevation of the return is abutted at its centre by a slightly lower two-storey north-south aligned wing, with single-storey extensions adjoining to either side. The west elevation of the return features a dipartite window to the right and a single first-floor window above. The east elevation adjoins the main block.

The north-south aligned wing has a single-storey extension with a flat roof adjoining its west elevation at ground floor. This extension was built circa 1880. The wing's west elevation contains a single window to the right and two windows at first floor. Its south elevation contains two ground-floor windows. The east elevation is abutted by a lean-to extension at ground floor, with a single first-floor window above.

The lean-to extension follows the detailing of the main block and is abutted on its west and north sides by the two-storey return and on its east side by the main block. Its exposed south elevation contains double-leaf glazed timber-panelled doors with an original folding metal screen.

An L-plan extension has a felted flat roof with timber eaves boards. Its west elevation includes a projecting bay at left containing a glazed timber-panelled door with flanking sidelights, and its right bay contains a narrow 4/4 timber sliding-sash at right and a replacement timber casement window at left. A single window occupies the south elevation.

The main house is located at the street front and is enclosed to the south by a timber-sheeted fence. To the west lies a yard containing a series of single and two-storey outbuildings of varying ages. Immediately south of the rear yard entrance stands building No. 17, built circa 1870 and now used as a shop in connection with the main house. This adjoins to the west a series of small-scale vernacular outbuildings known as "The Entry," built circa 1840. Connected to "The Entry" is a series of attached outbuildings arranged around a courtyard. The north-south aligned block forming part of this group is among the earliest structures on the site, built circa 1820 simultaneously with the main house and prior to the construction of "The Entry."