Llwyn-y-gaer House

Llwyn-y-gaer House is a Grade II* listed building, recognized as one of the largest and finest farmhouses in Monmouthshire from its period, according to Pevsner and Newman (2000). The house is constructed of brown rubble with a slate roof and red brick chimneys. It features an L-shaped plan, consisting of a main range oriented east-west and a south wing at its eastern end. The building has a tall gabled profile with clustered diagonal chimney shafts. The windows are designed with ovolo-moulded mullions, including one on each floor of the north elevation, which also features transoms. The current entrance on the south elevation incorporates the doorway from a demolished north porch, characterized by a wide wooden doorcase with a moulded architrave and a segmentally-arched lintel.

Inside, the hall in the main range is illuminated by the lower of the transomed windows on the north elevation and has ceiling beams with double ovolo moulding, along with ovolo-moulded joists. The chamber above, which is now subdivided, retains similar beams and features a fireplace adorned with rich moulded plaster decoration dating to around 1670. This includes vine-clad columns on either side and an overmantel decorated with raspberry pendants and a cherub head. Additionally, the northeast chamber showcases moulded plaster ceiling decoration, featuring a large circular fruit-and-leaf wreath in the center and four smaller wreaths in the corners, comparable to the geometrical moulded plaster found at The Artha.