The former Leyton Orient loanee has signed a three-year contract at The Valley.
"I'm delighted with the three-year deal," he told Charlton's official website.
"It means I've finally got some stability, and now I can concentrate on establishing myself in the first team squad.
"I'm pleased that the club has stuck by me.
"It's been quite a turbulent couple of seasons for me, but I'm happy with how my game has improved, and I just want to keep on developing."
The club's Young Player of the Year was sidelined with a knee injury for some of last season.
Meanwhile, Adrian Deane has signed a one-year extension to his deal with the South Londoners.
The Republic of Ireland youngster has admitted he is prepared to go out on loan in order to gain some more first team experience.
