The Chicago Planning Commission has granted planning permission for The Chicago Spire – the tallest residential building in the world.

The 2,000 ft twisting building at 400 North Lake Shore Drive, designed by architect Santiago Calatrava, will comprise 150 floors and 1,200 apartments. It is being developed by Irish developer Garrett Kelleher, chairman of Shelbourne Development. Work will start next month and the tower will be completed by 2010. Savills is marketing the scheme.

Calatrava said that he set out ‘to design an innovative and soaring tower that would transform a naturally beautiful site into a truly special destination’. The Chicago Spire will include a four-storey glass lobby area and the building will have an advanced energy efficiency and environmental policy.