 The castle was placed into the care of the state in 1922 by Frances Lucas-Scudamore, and conservation work was carried out, including clearing the basement of the north block of debris.In the 21st century, Grosmont Castle is managed by the Welsh heritage organisation Cadw and is protected under UK law as a grade I listed building.Grosmont Castle overlooks the village of the same name, and in its current form dates mostly from the work carried out by Hubert de Burgh with later 14th-century additions.