19 Segully Road, Drumquin, Co Tyrone, BT78 4RD

19 Segully Road, Drumquin, Co Tyrone is a detached vernacular dwelling built around 1830, located on the west side of Segully Road. The house forms part of a substantial group of related vernacular buildings on the site, which includes outbuildings and neighbouring dwellings, representing a significant example of early 19th-century rural architecture in Tyrone.

The main house (block A) is a two-bay single-storey structure with direct entry, raised to one-and-a-half storey at the east bay. The rectangular plan includes a wind-break porch to the north. The walls are whitened lime render over rubble construction. The pitched roof is corrugated metal on the west bay with a rubble chimney capped in sandstone; the east bay has natural slate roofing with an ashlar sandstone chimney. Windows are replacement timber-framed casements with painted sandstone sills. The principal south-facing elevation shows a single window at the centre of the left bay, with the wind-break porch containing a replacement timber-panelled door with glazed top panels to the right. The raised right bay has single windows at each floor. The west gable is blank, whilst the east gable features painted ashlar sandstone quoins. The north elevation contains two ground-floor windows surmounted by a single original 2/2 sliding sash window at first floor in the raised left bay; the single-storey right bay contains a small original 2/2 sliding sash window at left. Plasterwork shows evidence of slightly raised eaves level, indicating alteration work carried out when the right bay was raised.

The building was originally thatched. The right bay was raised to provide additional first-floor accommodation, probably around 1880, as indicated by the sandstone chimney and the eaves level adjustment to the single-storey bay, which likely occurred at the same time. Although the dwelling has been modernised with replacement windows and doors, the original form remains intact and its development is clearly visible.

The site contains a substantial range of outbuildings, all of rubble construction with pitched corrugated metal roofs. Directly to the north-west (block D) stands a one-and-a-half storey outbuilding with vertically-sheeted timber doors and external stone steps providing access to a loading door at first floor. To the west (block C) is a two-storey outbuilding abutted on the north by a single-storey byre with raised eaves level and on the west by a lean-to structure. This building has vertically-sheeted timber doors and metal casement windows, with external stone steps to the south accessing a first-floor loading door; the interior retains partial stone flooring. A similarly detailed two-storey outbuilding stands to the north-east (block E), with a single-storey byre to the south (block F). To the west, a pair of partially derelict two-bay single-storey direct-entry vernacular dwellings (block B) remain, each with a wind-break porch containing a vertically sheeted timber door and an attached byre to the south. These dwellings have pitched corrugated metal roofs with rubble chimneys and whitened lime-rendered walls. Windows are timber-framed sliding sash with sandstone sills, some of which are partially missing. Cast-iron half-round gutters and round downpipes serve the main house.

Historical records show that buildings A and B appeared on the first Ordnance Survey map of 1833, with B comprising two separate structures at that time. By the second edition of 1854, buildings C and F were present and B had been consolidated into a single structure. The third edition map (1939–51) shows the addition of buildings D and E. The house conforms to vernacular tradition and is likely to date from the early 19th century, as evidenced by its simple construction and materials. The byres and vernacular dwellings (block B) stylistically appear to date from around the same period as the main house, though they were extended, possibly to include attached byres, during the mid-19th century. The remaining outbuildings were constructed in the latter half of the 19th century.

According to Griffith's Valuation (1856–64), two separate plots existed, both leased from the Earl of Castlestuart. Building A was valued at £1 5s and building B at £1 15s. In the Annual Revisions, the plot fell under a single occupier, John Turner, with a combined valuation of £1 15s. The Turner family continued to occupy the plot throughout the valuation revisions (1860–1929) and became the owners in fee in 1917.