From 1996 until April 2012, the council's administrative headquarters were at the six-storey former Gwent County Hall at Croesyceiliog, Cwmbran – outside its own jurisdiction in the neighbouring borough of Torfaen and shared with Torfaen County Borough Council. It was closed because of "concrete cancer" and later demolished. In 2010 the authority had decided to relocate its headquarters functions to new offices in Usk. In May 2010 it was reported that the council had purchased additional offices at the Wales 1 Business Park at Magor. Planning permission for the new Usk office building, to provide the authority's central facilities, was granted in September 2011. The new £6 million county hall was opened in mid 2013.