Thornhill is a detached family house built in 1930, designed by Pakington, Enthoven, and Grey architects, and located in a elevated position with views across the Romney Marshes towards the sea. The property has a mix of original and modern features, including a mellow pink brick exterior, a pitched green slate roof, and a light-filled interior with well-proportioned rooms. The ground floor features an entrance vestibule, a living hall/study, a sitting room, a dining room, a kitchen, a garden room, and a shower/cloakroom. The first floor has a spacious landing, four bedrooms, a family bathroom, a cloakroom, and a laundry room. The second floor has two attic rooms with a dormer window and a large walk-in roof space. The property is set in established grounds with a wide, south-facing brick rear terrace, a large lawn, an orchard area, a pond, a summerhouse, and a kitchen garden.