Plas Dol-y-moch

Plas Dol-y-moch is a gentry house dating to the 17th century, with later additions. It is constructed of coursed and dressed local stone, with a slate roof topped by exceptionally tall stone stacks featuring dripstones and capping. The house comprises a main range with later flanking wings.

The main range is two and a half storeys, originally featuring a four-window facade, with the doorway offset to the east with two windows to the left and one to the right. The windows are now modern timber casements with mullions, transoms and multiple lights. The attic windows are set in gable dormers. The advanced wing to the right has matching windows on the ground and first floors, with a 2-light casement in a rendered gable apex; the ground floor window is set in a partially blocked doorway. The left lateral wall has a single window on each floor, and the right lateral wall is a three-window range with a central doorway and gable dormers. A stone inscription on the outer wall bears the date 1643.

The left (west) advanced wing is slightly lower and has similar windows. The right lateral wall has a single window, and the left (west) wall has a two-window range, with first-floor windows in raking dormers that break the eaves. A single-story range extends from the northwest corner in an L-shaped plan around a small enclosed yard. This range has boarded doors and small-paned casements of two and three lights.

The house originally comprised a hall and parlour (now a dining room) in the main range; a staircase is located in the wing to the rear. The west wing houses the kitchen and scullery, while the drawing room is in the wing to the right. Larders and stores are situated north and west of the enclosed yard.

The older parts of the house retain characteristics of their age, including large collared trusses with angled struts, massive chamfered cross beams, and exposed joists. A notable feature is a staircase constructed of slate slabs, running from the hall to the top of the house, with a corresponding slate slab floor along the rear passageway.

A plaster frieze depicting the shields of arms of the 15 tribes of Gwynedd runs around the walls of the drawing room in the east advanced wing; only eight of these shields remain, with some having been defaced or lost.

In the principal upstairs room, a plaster overmantel displays an armorial bas-relief with a shield bearing the arms of Gollwyn ap Tangno impaling a chevron between three spearheads (Hywel Coetmor). The shield is encircled by a floriate motif and flanked by human heads. A similar overmantel in a back room displays a shield of arms Quarterly Iestyn ap Gwrgan and Gollwyn ap Tangno, with the Paschal Lamb as a crest and the motto “Velle quod vult Deus,” flanked by human figures on pedestals.