To provide a trunk room, in which the building space of a multiple dwelling house such as condominium is used as a trunk room chamber not wasted.

The trunk room in a multiple dwelling house such as condominium is formed by engaging a front plate 1, in which the vertical size of the trunk room A is designed in the vertical size of a trunk-room disposing room, which has a door 1a with a lock opened in the front direction and in which a large number of bored holes 1b for natural lighting are formed to the upper section of the door 1a with the lock, left-right side plates 2 connecting the left and the right of the front plate 1, a back plate 3 coupled with the left-right side plates 2, and square-shaped connecting rods 4, 5 fixed at the upper-lower end sections on the inside joined for ensuring the connection of the front plate 1, the left-right side plates 2 and the back plate 3. When the trunk room is united with the wall body of the trunk-room disposing room or the trunk room A is installed adjacently to the side or rear of the trunk room A, a member joined with the wall body is omitted, and the adjacent member is omitted in the latter.