Dol-y-Gadfa

Dol-y-Gadfa is a sub-medieval farmhouse that is two storeys high and features a three-unit lobby entry plan with an offset rear wing. The building is made of slatestone rubble with rough-dressed quoins and has a partly boulder-built plinth. It has a renewed medium-pitched slate roof that lacks gable parapets. The central chimney has simple capping, and there is a similar end chimney on the rear projecting wing.

The near-central lobby entry on the right has a modern six-panel door, flanked by two windows on each floor, except for the ground-floor opening at the far right, which is a modern multi-pane glazed door set in an earlier opening with an expressed timber lintel. The other windows are all 12-pane 19th-century casements, except for the upper right window, which is a modern replacement. All windows feature projecting slate sills.

On the rear elevation, there is a fixed two-part window on the ground floor to the left, consisting of six-pane and plain sections. Left of center, there is a blocked-up entrance with a slatestone slab forming a bridge to the raised ground level. The rear wing also has a blocked opening on its east side. There is a modern 12-pane casement on the east gable end of the main block, with an expressed timber lintel. The west gable end is clad in corrugated asbestos. Attached to this is a single-storey 19th-century brewhouse block made of rubble and slate, featuring a squat rubble end chimney, an entrance to the right with a modern boarded door, and a six-pane casement to its left.

Inside, the lobby-entry plan has a parlour on the right and a hall on the left. The hall ceiling features roughly chamfered beams with a run-out stop on the main beam, and there is a fireplace with a stopped-chamfered bressummer. At the lower end of the hall on the left, there is a primary post-and-panel partition that divides the former hall from service rooms and appears to pre-date the current hall ceiling.