Primary House at Plas-yn-Llan

Long, one-and-a-half-storey range under a continuous slate roof. The 2 upper (western) bays have limestone rubble lower sections and gable end, with exposed timber framing to the upper sections. The remainder is of limestone rubble, though also incorporating evidence for former timber-framing; the right-hand third of this section has been rebuilt to the rear in modern breeze blocks. The N side has an entrance to the L with a later C19 multi-pane fixed window adjacent. To the R is a wide segmentally-arched opening of brick, c1900, forming a cart bay. Beyond this are 3 further entrances, the first open and the remainder with boarded stable doors. The upper storey has two small 2-light windows under the eaves, with wooden mullions; towards the R is a loading bay contained within a catslide dormer and breaking the eaves line. The L (E) gable has an end chimney of brick (c1900), with simple cornice. The timber-framed section, to the R, has 2 further entrances and an open loading bay to the gable; exposed timber lintels throughout. To the rear, the timber-framed section is open, save the R bay where the framing is infilled in early brick. In the centre of the stone section is a small, early C17 2-light wooden mullioned window, now at ground level; further window with boarded shutter above.

Seven-bay interior with tie-beam and raking strut trusses, probably C17; modern purlins and rafters. The 2 eastern-most bays have beamed ceilings with stopped-chamfered joists, ogee-stopped to the first. This also has an inwardly-projecting chimney breast with a curved, stopped-chamfered bressummer to its fireplace; within is a later bread oven and adjoining to the R is a C19 wash boiler. These first 2 bays are divided by a truss partition on the upper floor which retains its lime-plastered wattle and dawb infill panels; primary central doorway.