The Greater London Authority (GLA) will relocate to Royal Docks next year saving £61m over five years, the mayor has confirmed.
Sadiq Khan said the move will save £6m more than originally forecast and will help protect frontline services.
The Crystal is a building already owned by the GLA, and the mayor hopes the move will act as a catalyst for the regeneration of Royal Docks.
Mayor Khan said: ‘I know that City Hall is a landmark building for many – but as Mayor I will always focus my severely limited budget resources on front-line public services and supporting Londoners and our recovery from this pandemic, rather than on high City Hall building costs.
’The Royal Docks is an amazing place, and we have the opportunity to turbo-charge the regeneration of the area, just as the opening of City Hall did for its surroundings.’