Corn Barn with attached Stable and Lofted Cider House at Great Tre-Rhew

A substantial corn barn with attached stable and lofted cider house, dating to the 17th century, forms a large U-shaped farm range. The building is constructed of rubble stone with a slate roof. The southwest front features the gable of the stable wing on the left and the gable of the lofted cider house on the right. Between these wings is a covered yard with a monopitch corrugated metal roof. Set back at the rear of the yard to the right are boarded doors leading to a threshing floor. A narrow side wall on the left has a segmental arched window on the ground floor and a vent slit above. The gable of the stable has a vent slit in the gable head, two vent slits below, a loft with a square pitching hole and vent slits on each side, and a 20th-century cartshed entry on the right with a vent slit to the wall on the left. The gable of the cider house has a flight of stone steps leading to a segmental arched doorway with a boarded door, and vent slits on the flanking walls. A narrow passage built into the step wall leads to a boarded door of the cider house. A vent slit with a square pitching hole is in the gable head. The northwest elevation displays the gable of the barn on the left and the side wall of the stable wing on the right. The barn has a vent slit in the gable head, two slits below, and three slits to the loft. The ground-floor cowhouse has a boarded door on the left, half-doors in the centre, and remains of a studded door on the right. The side wall of the stable, first floor, has three vent slits, and a badly eroded datestone of 1696 bearing the initials P I M. On the ground floor is a segmental arched stable doorway with boarded half-doors (one with trident hinges), and a vent slit to the wall on the right. The northeast elevation of the barn has a centre projecting gabled porch, a single-storey lean-to on the right, and a corrugated metal lean-to shelter shed on the left.

The barn features a stone-flagged threshing floor and has an interior of eight bays. The lofted cowhouse has 19th-century trusses with kingposts and two tiers of raking side struts. Above the threshing floor are 17th-century trusses with raking queen struts, and at the southeast end are collar and tie beam trusses. There are three rows of staggered purlins. The interior of the cider house contains a 17th-century four-light diamond mullion window, a large mill stone approximately 1 meter high with a wooden drive shaft, and a massive, roughly 2.5-meter diameter circular stone trough made from stone blocks clamped together with iron cramps. The curved inner chase of the trough is capped with elm at its rim. A cider press has an octagonal wooden base and an iron screw.