Primary House at Plas Coch

Plas Coch is a simple rectangular building constructed of whitened rubble that encases an earlier cruck-framed timber house. It is a single storey plus attic, featuring a slated roof and a squat, two-stage end chimney on the right side. The central entrance has a 20th-century boarded door, flanked by 12-pane 19th-century casement windows with segmental heads. The attic includes two gabled dormers with 12-pane sliding sashes, and plain bargeboards with deep verges. At the rear, which is unwhitened, there are two small primary wooden mullioned windows, each with two or three lights, though they are partly obscured.

Inside, the building has a two-bay layout with a full cruck truss, one blade of which is visible within the rear wall. To the right of the entrance is a hall that features a large fireplace with an obscured bressummer. The first-floor chamber above the hall has plain, early plastered walls and a canted ceiling. Above a plain fireplace opening, there is an impressive plaster relief overmantel dated 1647, featuring the initials HEF (for Ffoulkes), along with strapwork and foliate decoration.