The Olympic Delivery Authority has announced the two preferred bidders to build the Olympics Media Centre.
Construction company, Carillion and regeneration firm, Igloo were chosen ahead of rival bidders, Bouyges and Development Securities.
The building has already caused controversy after its estimated cost rose to be three times higher than preciously calculated.
The centre will be built on land owned by the London Development Agency. It is hoped it will become a business centre and attract companies to its city offices once the Games have ended.
A fifth of workers at the Olympic Park are estimated to be local residents. Prime minister Gordon Brown said he hoped that when the games begin they will "promote a range of skills and talents in the local community".