Hangleton Manor Inn's 15th- and 16th-century origins make it Hove's oldest secular building. Flint has always been plentiful around the South Downs—several ancient mines (up to 5,000 years old in some cases) have been found across Sussex—and many buildings on the south face of the Downs are built of the material. Hangleton Manor's buildings are of plain (mostly knapped) flint with some stone and ashlar dressings and quoins. The roofs are hipped and laid with clay tiles, and there are several chimney-stacks at irregular intervals. The complex is L-shaped; the longest (northwest) side is formed by the long, two-storey 15th-century range (the Old Manor House section). A 1925 study noted that it resembled Glynde Place, a flint house of a similar vintage (1560s) at Glynde, near Lewes. The buildings and their grounds are sunk into a sheltered hollow in the undulating downland, which allowed a wide range of plants to be grown when it was still a farm.