 It was announced on 22 March 2013 that the team signed a 99 @-@ year lease for the Olympic Stadium after the government agreed to put in an extra £ 25 million towards the costs of converting the site . It is seen as a massive step forward for the club . They plan to move into the Stadium before the start of the 2016 – 17 season . Supporters of rival clubs had pressed for an inquiry into the granting of West Ham 's tenancy , arguing that West Ham were being given an unfair advantage by the arrangement . In September 2015 , however , the government rejected holding such an inquiry . 
