PURPOSE: To avoid a cage inside from forming a secret room over a long time by setting up in a plural number of upper and lower zones respectively an elevator, operated in these zones, and forming a common story by the uppermost story stopping the elevator in the lower zone and the lowermost story stopping the elevator in the zone connected to the upper of said lower zone elevator.

CONSTITUTION: For moving from a zone 4a in the lowermost of a building 1 to a zone in the upper and to the outside of the building, connection is required of two or more elevators 2a to 2d, but each elevator runs in only the determined zone, and getting off a riding spot is necessary for a relay in common stories 5a to 5c. Consequently, the elevator prevents its cage inside from forming a secret room over so long time to a length a crime is committed. While because the elevator can be arranged concentrating in a core part of a building for multistory housing, a layout can be facilitated of the building 1 preventing each elevator from increasing its lift stroke, so that an equipment with less capacity is only required.