A device information acquisition unit (251) obtains device information collected by a controller. A layout editing unit (252) edits a simplified room arrangement of a residence by individually adding room configurations, in which electric devices are arranged, in accordance with operations performed by a user. A device icon arrangement unit (253), in accordance with operations performed by the user, arranges icons for the electric devices inside the respective rooms of the room arrangement that has been edited by the layout editing unit (252). A layout generation unit (254) generates layout information on the electric devices in the residence on the basis of the edited room arrangement and the arranged icons.