Coed-y-fon Farmhouse, including attached Granary and Cartshed

Coed-y-fon Farmhouse, which includes an attached granary and cartshed, is a two-storey building constructed from red sandstone rubble, with some coursed and squared sections, and a noticeable batter. The granary, built in the Victorian era, features similar stonework, while the rear wing is rendered. The farmhouse has a single depth plan typical of 17th century houses, with a narrower added room on the left. A second range was added behind the original structure in the mid 19th century.

The entrance elevation faces north and consists of four bays. The first bay is blind on the left, followed by a modern gabled hood over a cross-passage door framed in a 4-centred Tudor style. Next, there is a possibly early 20th century canted bay window with three 3 + 3 pane casements, separated by stone piers and topped with a slated roof. The final bay features a modern replacement door. On the upper floor, there are five modern timber casements with 2 + 2 panes and segmental brick heads. The low pitch of the roof and rebuilt stacks indicate that this part of the building likely dates from the mid 19th century.

To the right, the granary is added in-line and has an external stair leading to the upper door, which is covered by a raised roof. Below are the cart sheds, one featuring a segmental arch head beneath the stairs and a square-headed entrance to the right. The roof is steeply pitched with a bell-cast on the left side. The right return gable includes an upper window for the granary.

The rear elevation displays Victorian or early 20th century sash windows in the mid 19th century range, along with modern joinery in the early 17th century addition.

During the resurvey, only the ground floor was accessible. The main door opens into a cross-passage, with the original house to the right and the added room to the left. The passage features oak framed 4-centred doorframes, and there is an original gable entry to the house. The original room has lost its stud-and-panel partition but retains chamfered beams with pyramid stops. The fireplace has been reconstructed with stone jambs and an oak lintel, with a firestair to the right. The addition has a ceiling with a chamfered beam and a plain fireplace, along with a spiral firestair to the left. The roof structure was not visible, but its low pitch suggests it has been replaced.