Summer House Approximately 15 Metres South West of Watercombe House

The summer house, built in 1841 by Thomas Baker for himself, is located approximately 15 meters southwest of Watercombe House. It is constructed from coursed rubble limestone and features reused Roman stone slates along with a clay pantile roof. The building is two stories tall, with the east-facing gable end showcasing many Roman bricks arranged in bands and square Roman clay tiles, some of which are set diagonally.

The entrance on the lower level has an off-centre doorway with a six-panel door and a stone lintel. On the upper floor, there is a central sash window with Gothick glazing bars. Additionally, there is a small-paned fixed-light window on the south side and another sash window with Gothick glazing bars above. A flight of stone steps on the north side leads to a doorway at the rear on the upper level. The lower part of the roof slope incorporates Roman stone slates, hung diagonally.

Thomas Baker is noted for his work in investigating the Lillyhorn Roman villa near Bournes Green, with many of the finds being sent to the British Museum and incorporated into this building, which was intended to display a more extensive collection of Roman artefacts.