The university maintained gender-segregated halls until 1999 when Lake and Wyddrington "halls" (treated as two different halls, despite being physically one building) were renamed as Shackleton Hall. Chamberlain Hall (Eden Tower), a seventeen-storey tower block, was originally known as High Hall, for male students, and the connected Ridge Hall (later renamed to the Hampton Wing), for female students. University House was decommissioned as accommodation to house the expanding Business School, while Mason Hall has been demolished and rebuilt, opening in 2008. In the summer of 2006, the university sold three of its most distant halls (Hunter Court, the Beeches and Queens Hospital Close) to private operators, while later in the year and during term, the university was forced urgently to decommission both the old Chamberlain Tower (High Hall) and also Manor House over fire safety inspection failures. The university has rebranded its halls offerings into three villages.