The main building is classified as assembly occupancy and consists of one storey, plus an access tunnel; there is provision for an additional floor. The tunnel access to the building has an area of 3,632 square meters. The tunnel was created to provide safe and quick access to the building by avoiding the need to cross roads or walkways and to produce economies in the use of air conditioning and electricity. There are travellators of 30 meters maximum length and skylights wherever applicable. Escalators and fire exits are also provided and these comply with international and local codes.

Level one, or ground floor, has a total area of 5,938 square meters. It consists of swipe access areas, queuing and waiting areas for both airside and landside, custom and police administration offices, search rooms, service areas, MCR rooms, AHU rooms, LV rooms, generator room, locker rooms and other services.