 Challoner Cottage, Mittagong Farm Home, dating from 1941, is of state social significance to many of the 30,000 or so children who lived at the Mittagong Farm Home between the 1880s and 1990s, one of the longest-running children's home in NSW.Many former child residents, including some of the Aboriginal stolen generation, have deeply emotional connections to Challoner Cottage because of their good and bad childhood experiences at the farm.Challoner Cottage is of state significance as a representative example of an institutional style of accommodation for children that contrasts with nearby "cottage-style" accommodation.