Watermill to south-west of Stables including archway into mill yard and attached L-shaped range

2-storey mill built of local rubble under a slate roof with wide eaves. Red brick dressings to camber-headed arches including to central carriage arch on north-west side (now infilled). Otherwise square-headed openings with 4-pane windows with unusually thick frames; probably originally had sliding ventilation shutters to the lower lights. The power for the mill came from the Afon Llifon to an overshot waterwheel on the south-west end; the wheel is in situ but its buckets are missing. The wheel-pit is partly roofed over with a later sawmill lean-to attached beyond. The machinery survives here as does a reused cast-iron Ionic column (similar to those in the kitchen courtyard at the back of the house). The south-east side has skylights and otherwise similar detail. Toward the upper end is the added turbine house which is a broad, slate-hung, gabled cross-range with diamond leaded window; further gabled projection for 1st floor entrance reached across footbridge over a yard. The north-east end has a deep lean-to, the roof of which reaches almost to the higher ground level of the adjacent drive and has skylights; this lean-to wraps around the corner and returns along the north-west side. Boarded door with latticed overlight.

Gently pointed archway adjoins watermill and links it with a adjacent ancillary range. The brick arch is set into a rubble wall. On west side of wall is a lean-to with 2-light window and boarded door; red-brick chimney. On the other side a similar lean-to and attached high screen wall with coping that runs north toward the drive.

Despite conversion some machinery survives at south-west end with spur wheel and main drive in situ. Modern staircase leads to upper floor where one stone survives with its own horse and hopper; also one relocated dresser. The roof of queen-post trusses is of 5-bays. Slate flagged floors. Turbine house to rear, the upper floor of which was the Battery Room. Modern partitions.