Llettau at Pentrehobyn

Llettau at Pentrehobyn is a low single-storey building made of rubble stone, topped with a massive stone slab roof. It is divided into eight small cells, with an attached two-storey block at the east end, which is part ashlar and is believed to have been used by the warden or overseer. Each cell features a boarded door beneath a canted dressed stone lintel and a small round-headed ventilation opening beside it. There is a modern inscribed plaque in the center. The two eastern cells have circular vents and slightly wider doorways.

The two-storey warden's house is constructed from finer, partly ashlar masonry and includes gable parapets, simple rounded kneelers, and a ball finial at the east gable apex. The opposite gable has a stone chimney stack with weathercoursing. There is a plinth on the east and north sides, and the north side features outside stone steps leading to the upper floor. The main entrance is on the south side, showcasing a canted Tudor-arched door beneath a two-light window with rounded heads. The gable end has a rectangular attic window and a camber-headed ground-floor window that has been extended through the plinth to create a tall, narrow doorway.

To the west, there is a rubble linking wall with pointed coping and a small boarded door set in a chamfered opening with large jambs. The individual cells vary slightly in size but all have cobbled floors and simple barrel-vaulted stone roofs, measuring approximately 1.8 meters high and 2 meters wide. The interior of the warden's house has been renovated.