Beverly Hills was lima bean farmland worked by Henry Hammel and Andrew Denker until oil prospectors bought the ranch; when their wells came up dry, the partners reorganized as the Rodeo Land and Water Company in 1906. In 1907 landscape architect Wilbur D. Cook laid out gently curving, tree-lined streets, with larger lots on the steeper ground to the north and smaller parcels to the south, and the city incorporated in 1914. Houses filled the Flats below Sunset Boulevard mostly in the 1920s and 1930s, while duplexes, fourplexes and apartment buildings went up south of Wilshire, and the former Doheny ranch was subdivided into the 532 lots of Trousdale Estates in the mid-1950s. A lot drawn in 1907 and one drawn in 1955 rarely leave the same room for clothes.