The former Boreham Wood manager this weekend committed his future to the National League South side.
He will become more hands-on at Clarence Park with some important new roles.
As well as working on the Saints development commercially, he is also to study the possibility of moving the club forward to eventually turn professional.
St Albans City’s vice chairman John McGowan told the club’s website: “I was so impressed when I first met Ian, and knew that he was the right man for our club, and I have not been disappointed with what he has done with ourselves since becoming manager.
“With Ian’s 30 years of experience in the game it was an easy decision to ask Ian to support in the next stage of the club’s development.”
Allinson added: “I’m very privileged and honoured to be here at St Albans City and I’ll give my all to improve the commercial basis of the club and make the supporters proud of this great club.
“Together, we’ll be stronger and I’m looking forward to working with the players, staff, supporters, businesses and the people of the city of St Albans to make the right steps forward.”