On the lowest floor of the building, there is a exposition space for Starks' prototypes and simulations. Higher floors are rented to various socii of Familia de Stark, who are responsible for executing these prototypes. Above them, there are residential areas for Familia's signiferi and curatori, with the highest floors reserved for the Familia. The highest floor is a heavily restricted workshop/laboratory of Lord Anthony de Stark.
The Stark Tower is entirely self-sustaining with the Arc Reactor and hydroponics located in the basement.