Garden House Approximately 15 Metres North of Number 24 Mulberry House

The Garden House, located approximately 15 metres north of Number 24 Mulberry House, is a garden house built in 1812. It features cut flint with gault brick dressings and corner piers, along with a brick plinth. The structure is one storey high and has a cellar, with a square plan and canted corners. Each of the north and south faces has one 2-light Y-tracery window. A 20th-century plank door is situated on the west side, framed by a reeded doorcase with trumpet capitals. Above the door is an overlight set under a depressed arch, which has a keystone inscribed with the date 1812. The building is topped with a crenellated parapet and has a stack on the east face.

Inside, the door and windows feature reeded jambs. There is a fireplace with reeded jambs and a frieze that includes an early 19th-century cast-iron hob grate. The ceiling is shallow and domed, adorned with rolled ribs and a continuous plaster cornice decorated with a running floral bead, culminating in a central floral boss.