This information terminal displays a display screen representing each room contained in a building at a display, displays apparatus icons representing each of at least one subject apparatus in units of each room displayed at the display screen at the display, and when the selection of a first apparatus icon representing a first subject apparatus among the subject apparatuses has been detected, displays at the display a room screen representing the room corresponding to the selected first apparatus icon; the displayed room screen contains a first operation screen for operating a first subject apparatus corresponding to the selected first apparatus icon, and contains a second operation screen for operating a second subject apparatus that corresponds to a second apparatus icon other than the selected first apparatus icon and that is disposed in the room displayed at the room screen; and a first control command for controlling the first subject apparatus on the basis of an operation of the first operation screen is output to a network, or a second control command for controlling the second subject apparatus on the basis of an operation of the second operation screen is output to the network.