Dyffryn Farmhouse, (including railings, dwarf walls and gate piers at splayed entrance)

Dyffryn Farmhouse is a farmhouse dating from the 17th century and early 19th century. It features rendered stone, timber framing, and slate roofs. The earlier part of the farmhouse, located at the rear, is a low one-storey building with an attic, consisting of three bays and set parallel to the road. This section has a jettied and close-studded timber-framed upper floor, supported by rendered masonry on the ground floor and a rendered stone gable end. The eastern gable is painted to reflect the internal decorative framing, which includes an original decorative apex panel with convex braces. The roof is slate-covered, and there is a stack on the western gable end.

In front of this earlier section, connected by a lower link building, is an early 19th-century symmetrical block made of polygonal local stonework, also with a slated roof. This two-storey structure has three bays and features a central porch supported by paired Tuscan columns, which hold up a small hipped slate roof. Flanking the porch are canted multi-paned bay windows. The upper floor contains three-light windows on either side of a central two-light window, all of which are multi-paned and have painted wedge lintels. A prominent central brick stack with three close-set flues and dentilled offsets is also present.

The early 19th-century splayed entrance, located directly off the A.490 and symmetrically opposite the house, consists of low ashlar stone walls and terminal gatepiers with weathered copings. These support short iron javelin-headed railings and intermediate dog-rails. The wall stops short on the southwest side to allow for a pedestrian entrance with a matching gate. This entrance is important to the setting of Dyffryn Farmhouse.