Former Farmhouse at Fron Farm (excluding the modern house attached to N)

The former farmhouse at Fron Farm, dating from the late 16th to early 17th century, is the oldest part of the building and originally functioned as a single-storey, rubble-built, three-unit hall house, partly constructed on exposed rock. It features a massive off-centre stack that has since been reduced. In the early 19th century, the structure was raised to a greater height. The medium-pitched slate roof includes an added rubble projecting end-chimney on the west gable end, which has a brick-built upper section. The plain entrance on the left has a boarded door, while the central hall section features an early 20th-century three-light fixed window with a timber lintel and brick cill, along with a similar two-light window above it. To the right, there is an entrance through an early 20th-century brick porch with plain boarded doors and a comparable three-pane window at the rear. Inside the right section, which was the former parlour, there are stopped-chamfered ceiling beams, and in the hall, a wide inglenook fireplace that is stopped and chamfered, although it has been later disturbed and given a cambered head.

To the east of this main range, forming the west arm of an L-shape, is the surviving ground floor section of a mid to late 17th-century parlour wing, which was originally storeyed and gabled. This section has been reduced in the last 20 years and reportedly had a triple-light arched-headed mullioned window on the upper south gable, according to the owner. The early 19th-century facade has two windows with a near-flush central entrance featuring a cambered head and a late 19th-century part-glazed door. The flanking windows are also near-flush with cambered heads and of the cross-window type. Inside the right-hand room, there is a chamfered beam with moulded tongue-like stops.

Adjacent to the main block on the west side, connected by a 19th-century Ty Bach, is an early 19th-century two-storey gabled cow byre with a loft above. This structure is built of rubble and slate, featuring rubble parapetted gables. There is external stone-stepped access to the upper west gable, along with three symmetrically-placed entrances that have flat stone lintels and plain stable doors. The building also includes two tiers of ventilation slits, most of which are blocked, and an upper unglazed window opening above. A rear outshut is located to the right.