Trelewack Farmhouse

Trelewack Farmhouse is a farmhouse dating to circa 1820, with few later alterations. It is constructed of slatestone rubble with granite dressings and quoins, and has a hipped slate roof with ridge tiles. The main range features an axial brick stack to the left and a front lateral brick stack to the right. The plan is single depth with two rooms to the left, a kitchen and a dining room respectively, heated by back-to-back fireplaces from the axial stack. A stair hall is to the right, with a parlour at the end heated from the front lateral stack. The entrance front faces to the right and includes a central entrance hall, leading to a rear wing with an end stack. A single-storey integral lean-to extends along the rear, originally containing unheated dairies.

The garden front is asymmetrical and two-storeys high, with three windows. At ground floor to the left are two 19th-century 20-pane sashes with cambered stone arches and keystones. At first floor to the left are two 19th-century 16-pane sashes, similarly detailed. To the right, a large round-arched stair light is set under a cambered stone arch, featuring a late 19th-century 12-pane sash with margin glazing and radial glazing bars, with a 20th-century window below. The right side of the house has a symmetrical three-window front to the first floor, with three 19th-century 16-pane sashes with cambered stone arches and keystones. The ground floor has matching 16-pane sashes to the left and right, and a central 19th-century panelled and glazed door with a 20th-century greenhouse attached to the centre. A 20th-century brick porch with double half-glazed doors is located on the left side. The rear wing to the left features a hipped roof. The outshut includes an 8-pane casement window to the ground floor, with a hipped dormer above containing a 19th-century 16-pane sash. A 19th-century 16-pane sash with a cambered brick arch sits at the first floor of the right side of the outshut, with a concealed 19th-century 4-panelled and glazed door at ground floor, partly obscured by a small 20th-century lean-to.

The stair hall internally contains a tight open-well stair with stick balusters and a moulded handrail, with columnar newels. The kitchen has a slate-paved floor and a rebuilt fireplace, including a straight stair along the rear. The rear dairies retain slate floors and slate shelves.