Sherrigrim House, 60 Newmills Road, Dungannon, BT71 4DJ

Sherrigrim House is a mid-to-late Victorian dwelling combining Classical Revival and picturesque cottage styles. Built between 1860 and 1879 (first appearing on the Ordnance Survey map of 1906–7), it was constructed by John Henderson J.P., who had established Ireland's only tape factory in the outbuildings here during the 1830s. The factory expanded significantly before being destroyed by fire in 1913, employing over 150 people at its peak.

The house is a three-bay, one-and-a-half storey gabled structure with rendered walls and slate roofs, standing well set back from the public road in rural farmland with its own grounds. A long two-storey rear return with basement extends to the west. The main entrance faces east.

The east elevation is symmetrical with the central entrance flanked by single windows on each side. Walls are smooth cement rendered with raised quoins and projecting plinth. The roof of natural slates features overhanging eaves and decorative timber barge boards of curvilinear design with turned finials. The central gable barge boards have cuspings with foliated terminations. Two chimneys, each of three stacks on a common base, rise from the roof, which is finished with a common moulded stone cornice. Cast iron rainwater goods comprise moulded gutters and circular downpipes.

The entrance is recessed within a segmental arched opening with moulded archivolt and plain fanlight. The door is flanked by fluted Ionic columns and sidelights, with further columns at the extremities. Windows are rectangular timber vertically hung sliding sash without horns—the upper window over the entrance is 2 over 2, while ground floor windows are 6 over 6, surmounted by raised triangular pediments on brackets.

The south gable contains a central first floor sashed window (6 over 6 with horns) and a ground floor window of similar design without horns, the latter enclosed within a projecting lean-to conservatory of glazed timber framing on a low rendered plinth. The conservatory features original plain tiling bordered by ornamented cast iron grilles and a glazed and panelled timber door on its east face.

The west or rear elevation presents the blind wall of the main front block with a short projecting gabled return, from which extends a longer rear return. The main block's rear wall is smooth rendered with raised quoins; the return and its extension are roughcast. The short gabled return features decorative barge boards and semi-circular arched timber sashed windows (1 over 1 with tinted margins) on each side wall, along with smaller rectangular windows of paired six-pane fixed lights or casements. The longer rear extension is two storeys including an exposed basement. Its south face has windows in two planes, the projecting block containing modern windows and a simple ledged timber door approached by concrete steps. A flight of steps descends to a lower basement area at the western extremity. The west gable contains three windows of varying types, including a 3 over 6 sliding sash to the upper floor. The north face has three sashed windows in the upper floor and modern type windows with French doors in the lower storey.

The interior retains key original elements including the staircase and Classical Revival plasterwork details. Original sashed windows with six-over-six panes are largely preserved throughout.

The house is approached via a driveway bordered by hedges, passing chamfered gate piers (now without original gates), and terminates in a gravelled forecourt fronted by trees. A modern rockery occupies the area between the north side of the rear return and the driveway. A small enclosed yard with modern paving and rubble stone walls lies on the south side of the rear extension. The farmyard to the rear contains rubble stone and cement rendered outbuildings of no architectural distinction, formerly comprising the tape factory buildings including a small single storey toilet block. The physical evidence of the factory is limited, though the site retains industrial archaeological interest as the location of Ireland's first tape factory.