The monument includes a medieval moated site at The Old Rectory, 650m to the south west of Elmsett parish church and immediately to the west of Elmsett Green. The moated site includes a sub-triangular island measuring up to 116m north- south by 74m east-west. The Old Rectory, which is situated on the east side of the island, is a Listed Building Grade II and dates from the late 15th/16th century. The island is contained by a water-filled moat, which measures up to 12m wide and 3m in depth. Access to the island is via a wide causeway across the north arm of the moat and a footbridge across the south west part of the moat. The Old Rectory and associated outhouses, the summer house, the swimming pool, all fences, gates and walls, brick steps, the footbridge across the moat and the wooden jetty on the east side of the moat, and all modern surfaces are excluded from the scheduling, although the ground beneath these features is included.