Powderham Castle is a fortified manor house situated within the parish and former manor of Powderham, within the former hundred of Exminster, Devon, about 6 miles (9.7 km) south of the city of Exeter and 1⁄4 mile (0.4 km) north-east of the village of Kenton, where the main public entrance gates are located.It is situated on flat, formerly marshy ground on the west bank of the River Exe estuary where it is joined by its tributary the River Kenn.