Mark made his full debut for the Hammers in last season's FA Cup Third Round win against Norwich City at the Boleyn Ground and went on to make 10 League and six substitute appearances, including the Play-Off semi-final victory at Ipswich and in the Final in Cardiff.
Born and bred in the East End, with his family still living close to the Boleyn Ground, Mark is a lifelong Hammers fan who came up through the ClubÂ¹s Youth Academy ranks from the age of 12.
After he made his debut, manager Alan Pardew, said: "We think very highly of Mark. He and his family love this Club and he's made a terrific start to his senior West Ham United career. If he keeps on working hard and continues to develop as he has, there is no reason why he cannot become a top player for this Club."