Byram was officially unveiled by the London club on Wednesday after signing from Leeds United for a reported £3.7million fee.
Essex-born Byram has close family ties with the East London outfit and cannot wait to realise his boyhood dream by stepping out in the claret and blue of the Hammers in England's top flight.
"It's a childhood dream of mine to play in the Premier League, so to have the chance to get into a team like this and I just want to get my head down, work hard and hopefully get a chance," Byram told West Ham's official website.
"I spoke to the manager and he is one of the main reasons which attracted me to West Ham. I think he's done unbelievably well with his team so far, so I'm really looking forward to working with him and his staff.
"My uncle and my cousin are big West Ham fans and have bought their tickets for the new Stadium. My uncle was down here yesterday getting a shirt with my name on the back! It's nice to have them down here and they'll help me settle so I'm looking forward to seeing them.
"I'm also really looking forward to seeing the new Stadium in person. That was another big part in me wanting to come here. It's a massive part of the future of the Club and I can't wait to see and hopefully play in it."