Tre'r Ddol

Tre'r Ddol is a 17th-century gentry house, with a rear wing creating a T-shaped plan, and a single-storey, lean-to porch added to the southwest. It is constructed from rubble masonry, roughly rendered and colourwashed, with a slate roof, gable dormers, and tall rectangular brick stacks with capping. The main elevation, facing east, has three windows across the front, with a central doorway. A central attic window sits within the gable, flanked by smaller gable dormers. The ground floor has two closely-spaced windows to the south of the doorway, with a single window to the north of it. A small three-pane window provides light to the cellar below. Windows are eight-pane, horizontally sliding sashes with slate sills; the ground and first floor windows feature eared and shouldered architraves. The north gable return has similarly detailed windows on each floor. The rear south end has a detailed first-floor window, a gabled dormer above, and access through the added lean-to porch, which has a small paned window and a modern casement.

The west wing has scattered windows; the south wall has two windows on both the ground and first floors, offset to the east. Some of these are modern replacements without architraves. The north wall has three ground-floor windows, two sixteen-pane hornless sashes to the right, and a narrow modern replacement window to the left. The first floor displays a single window offset to the left, and an attic dormer to the right. The west wall has a single ground-floor window, also a modern replacement, offset to the south and without an architrave.

The interior has been modernised and replanned, but retains features of a late 17th-century rebuilding. A central hallway leads to reset original details. A mid-17th-century dog-leg staircase has moulded strings and handrail, flat strip-balusters, and square newels with shaped finials and drops; the bottom newel is carved with a lion. A reset doorway beneath the stairs, square-headed with moulded jambs and carved strips with fleurs-de-lys, retains its original wrought-iron hinges. A similar doorway at the head of the stair features a shield flanked by lions carved into the lintel; the shield contains the initials and date B / W F / 1655. A reconstructed fireplace in a bedroom at the head of the stairs has painted decorative elements including acanthus, egg-and-tongue, bead-and-rail, carved scrolls, and consoles, with a modern central mirror above the mantel. A panel above the fireplace displays a motto and the initials and date B / W F / 1662, and above the mirror is a cartouche displaying the arms of Hwfa (for William Wynn alias Bold). Painted shields of arms flank the mirror.