Garden Walls with Privy, Pavilion and Cottage at Garthgynan

The garden walls of Garthgynan form a rectangular enclosure, with the house closing off the north side. The walls are primarily made of thin, handmade bricks that vary greatly in size. The east wall features 14 small bee-boles, while the west side has 17.

At the southwest corner, there is a pyramid-roofed brick pavilion that has been enlarged, likely in the 19th century, to function as a cottage. A similar pavilion is believed to have existed at the southeast corner but has been reduced to the height of the garden wall. The surviving pavilion includes a high-level string course, a blocked stone window frame facing east, and a blocked stone roundel with a label mould facing north. The south elevation has modern windows and a chimney set diagonally at the corner. The 19th-century extension of this building is constructed of stone and brickwork, topped with a slate roof and featuring an end chimney.

Additionally, there is a small brick privy building located at the northeast corner. This structure has a monopitch roof, a re-used decorative stone frieze at the top of the wall, and a door and window at the front.