Plas Mawr (formerly known as Cwrt y Ceidrim)

Plas Mawr, previously known as Cwrt y Ceidrim, is a substantial dwelling, originally dating to the 17th century. It is constructed of colourwashed rubble stone with a slate roof and a red tile ridge. The south elevation features a gable wing to the left with a stone voissoured window opening at ground level, alongside an outshut with an external stone staircase. The main house’s wall to the right shows remnants of a collapsed lateral stone stack, a ground-floor door opening, and a tall, unglazed window opening on the first floor, with a fragment of a stone reserve-chamfer mullion lodged in the wall to its left. The north side displays a gable stack, a two-storey staircase projection, and three tall window openings on the first floor, with three smaller ones situated below, but not aligned. The west front presents a 17th-century gable that projects slightly, flanked by wings and end stacks, resulting in a balanced facade. The centre gable features a chimney breast projecting from the upper wall, supported by three rounded corbels, with a small window opening to the left. The wings have tall openings on the ground floor and smaller, square openings above; the remains of a late 19th-century sash window are visible on the ground floor, right, with marginal side lights.

The building comprises eight bays. On the ground floor, the first four bays exhibit double roll mouldings on the beams and joists, which have moulded soffits with three flutes along each side. The kitchen includes a large gable fireplace with an oak lintel (opening 2.6 metres wide and 1.3 metres deep). An entrance door is located on the south wall, and a staircase is recessed into the north wall. A doorway within a wooden partition leads to an adjoining store room; a lobby on the south side, with a semi-circular wooden door head, gives access to an attached cellar/pantry. The Servants' Hall has plain beams. The parlour on the first floor has two curved stone corbels supporting a wooden fireplace lintel with a quadruple roll mould along the bottom edge. The ceiling beams are fitted with double roll and fluted joists. A spiral stone attic stair is to the left of the fireplace, and a partition opposite contains two doors, leading to an upper hall, which has a moulded dado rail and plain beams with socket holes indicating the former position of an 18th-century plastered ceiling. An elegant Georgian cupboard on the west wall features a semi-circular back, delicately curved shelf fronts, and reeded pilasters with panelled bases. Part of the left jamb of a fine 17th-century stone fireplace survives, featuring narrow, moulded side panels and a rounded corner. A doorway to the right of the cupboard leads to a bed chamber. A cupboard bed, formerly positioned beside the stair, has been removed, although remains of the stair are still present. The ceiling beams are fitted with double rolls and fluted joists. The attic’s original roof was replaced in the late 19th or early 20th century. Interior detail of the wings was destroyed by structural collapse.