Segrwyd Mill and Mill House

This is a late Georgian corn mill with an adjoining mill house. The buildings are constructed from limestone rubble with renewed slate roofs featuring large slates, plain modern bargeboards and oversailing verges.

The mill section is a rectangular, gabled block with its gable facing the lane. A wide entrance is on the left-hand side at ground floor level, featuring a segmentally-arched head constructed of rough-dressed limestone voussoirs, with modern boarded doors. To the right of the entrance is a modern nine-pane window with a cambered head. The first floor has a pair of similar windows with 19th-century nine-pane glazing. The gable apex contains an original 30-pane horizontal sliding sash window. At the rear is a large iron overshot water wheel, approximately 4 metres in diameter, from which the paddles are missing. A wooden launder carries water from a leat above, supported by a stone pier. The first floor has an unglazed loading bay with a 12-pane sliding sash window above. On the left or southeast side of the mill, the first floor has a 12- and 6-pane sliding sash window, and to the right is a boarded loading bay both with cambered heads, with a pegged frame. A single-storey lean-to addition of brick and corrugated iron is attached to the left.

The mill house adjoins the mill to the right, stepping down and being slightly set back. It is a two-storey, two-window structure with a central entrance via a modern stone and slate porch and a modern door. The flanking windows on both floors are modern nine-pane windows in cambered openings, matching those on the mill. A plain, squat chimney is located to the right. At the rear is a large nine-pane modern window, and a modern part-glazed door is located to the right. Modern glazing is present on two first-floor windows.

Much of the original milling machinery survives. The ground floor has slate-flagged flooring and a plain beamed ceiling, with an inclined ladder providing access to the first floor on the left. The main wheel shaft is partitioned off to the rear and its associated horizontal and vertical toothed wheels remain complete; no foundry plates are visible. On the first floor, there are three pairs of grinding stones, each with a corresponding flour bin below. The attic floor is accessed via an inclined ladder, and contains a grinding wheel for tools, powered by a belt pulley from the main shaft. The roof structure consists of three bays with open-framed queen post trusses; the rafters and roof have been replaced.