Coombe Millhouse

A millhouse dating to the late 16th or early 17th century, built of stone rubble and covered with a rag slate roof featuring gable ends. The original plan is uncertain, likely consisting of two rooms and a through passage, heated by end stacks. A masonry cross wall originally divided the lower right side of the passage, while a partition separated the left side; this partition has since been removed. A circa 18th century single-room extension was added to the higher end on the left, which was later raised to two storeys in the mid-20th century. An outshot was added to the rear of the earlier left-hand room, also in the 18th century.

The asymmetrical front has four windows. The left range was raised to two storeys in the mid-20th century, featuring a 20th-century window and door. The main range has a 5-window facade. A two-light mullion window with four panes and a smaller one-light window are set within granite surrounds. A four-centered chamfered granite arch, ornamented with ball and pyramid stops, forms an open porch supported by roughly cut granite piers. A four-pane sash window is situated in a partly blocked opening to the right of the entrance. The first floor has four two-light casements, replacements from the 20th century. The rear elevation was lowered and rebuilt above ground floor, possibly in the early 19th century. A timber, chamfered lintel with ogee stops sits above the rear passage door. An 18th or 19th-century outshot projects from the rear of the earlier range's higher room.

The passage interior remains intact, with a rebuilt cross wall on the lower side, likely dating back to the late 19th century, and the removal of the partition on the higher side. A circa 19th-century timber stair is present on the higher left side of the passage, with two stone steps potentially surviving from an earlier stair. The left-hand room of the original range includes an unusually small granite fireplace, featuring a granite lintel and chamfered jambs. The ceiling beams are chamfered with straight cut stops. The right-hand room was reputedly used as a stable in the 19th century, and features a larger fireplace with a chamfered granite lintel and granite rubble jambs, along with slightly chamfered ceiling beams with run-out stops. The ceiling beams above the passage have been renewed in the 18th, 19th and 20th centuries, with additional beams introduced into the right-hand room. The first floor and roof structure are not accessible.