The following text is from the original listed building designation:
ASH RICHBOROUGH TR 36SW 3/42 Castle Farm GV II
House. Early C18 to early C19. Red brick and flint extended with yellow brick. Plain tiled roof. L-shaped building of at least 3 periods. Two storeys and hipped roof on plinth with plat band on central bays and dogtooth cornice. Projecting hipped wing to right. Stacks to centre left and to right. Three glazing bar sashes with central tripartite glazing bar sash on first floor, and 2 glazing bar sashes and tripartite sash on ground floor with central 6 panelled door, the top 2 glazed. The central portion is largely of flint and rubble taken from nearby Richborough Castle.
Listing NGR: TR3184960430

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.