Trevalyn Farmhouse

Trevalyn Farmhouse is a two-storey building, constructed primarily of rendered brick, stone, and timber framing, dating to the early 16th century with later alterations and extensions. The farmhouse is arranged on a T-plan. It has a pitched slate roof and early 20th-century leaded casement windows throughout. The oldest part of the farmhouse is the cross-wing on the right side of the front elevation, featuring a single square-headed casement window on each floor, with pierced Gothic bargeboards to the gabled end and six windows of a similar type to the return. To the left of this projecting cross wing, the front elevation has five casement windows and a door; this section may have originally been part of a service wing. A large 19th-century lean-to with a catslide roof extends from the rear elevation.

The "Oak Room" contains original wooden panelling with decorative lozenge-shaped inlay and incised geometric patterns on the individual panels. A fine wooden overmantle of three bays displays the date "1588". A close string staircase with a square newel post ascends to a bedroom above the "Oak Room", where some original timber framing is visible in the cross walls, and there is a curious arch-braced truss creating a barrelled ceiling. Recent alterations have been made to the end of the northern range to create new attic rooms.