Villa manager Paul Lambert has confirmed Norwich goalkeeper Steer will become his sixth summer acquisition on July 1.
The former England Under-19 cap will provide competition for Brad Guzan and Benji Siegrist. Shay Given is expected to leave the club this summer.
Lambert told the club website: "Bringing in Jed will add to the goalkeeping department and helps with everybody pushing one another, learning from one another and making everyone better and wanting to improve.
"You want competition for places throughout the team, which is something we didn't have last season."