1 Harker's Hill, Cornascriebe Road, Portadown, BT62 3SS

1 Harker's Hill is a small, single-storey vernacular house built around 1871 as part of a rare surviving group of six mill workers' dwellings. It stands at the western end of a short canted row of four similar but non-identical houses, facing north towards a communal yard shared with a contemporary pair of semi-detached dwellings. The entire group occupies a largely untouched rural setting at the end of a country lane roughly 1.4 kilometres west of Laurelvale and 3.8 kilometres west of Tandragee.

The house is roughly rectangular in plan with a small step on the eastern side of the rear wall. A single-storey pitched roof extension dating to around the 1950s has been added to the western gabled end, narrower than the original structure and creating a visible step in the front wall. The front wall is constructed in clay brick finished with lime wash and a painted plinth. Rear walls are finished with lined cement render, while the extension is rendered in roughcast. The double-pitched roof is covered in natural slate with a small fixed skylight to the south side; eaves are clipped without overhangs. Brick chimneystacks with corbelled caps rise on either side of the ridgeline. Rainwater goods have been replaced in uPVC.

The front façade is asymmetrical, with a flat-headed timber sheeted door to the right and two flat-headed window openings to the left, each containing a 2/2 timber sash frame; the left-hand window is smaller. Window sills are painted stone. To the right of the door is a single flat-headed window opening with a steel Crittall-style frame serving the extension. The rear façade of the original dwelling has three flat-headed openings, each with a Crittall-style steel frame. The extension's rear façade has a timber-sheeted door opening, while its gable contains a further Crittall-style window. The western gable of the original house is largely obscured by the extension.

Historical evidence from Ordnance Survey maps of 1835 and 1860 suggests that this particular house, and its immediate neighbour to the east, may contain fabric of pre-1835 construction, though the materials and construction method appear consistent with the 1871 development. Valuation records show the property vacant from 1871 to 1887, followed by occupants Rose Mallon (to 1906), Bridgit McGinnety (to around 1930), Russell Grundle (circa 1930–36), James Murray (1936 to around 1957), and finally Eileen Shanks, recorded as living there in 1965. The houses were developed by Charles Moneypenny to accommodate workers at a nearby mill, whose remains are still extant. The group later came into the possession of the Sinton family, prominent mill owners, around 1903, though the mill had ceased operation by then and the dwellings were noted as cottier houses by valuers in 1904. The lease was acquired by the present owner's ancestor around 1930 and the freehold around 1965. All properties appear to have last been occupied as private dwellings in the mid to late 1960s, after which this house was used informally as a den.

The detailing and layout of both exterior and interior remain largely intact, and the group's unusual configuration—facing each other across a lane and communal yard in a rural setting—is increasingly rare. This property represents the largest dwelling in the grouping.