A control-relay apparatus that controls a device to be controlled, according to a control request received from a management device includes a request receiving part that receives, from the management device, control request data containing data indicating a condition that a device to be controlled should satisfy, and data indicating contents of control with respect to a device that satisfies the condition, and stores the control request data in a recording part accessible from the control-relay apparatus, an information obtaining part that obtains device data relating to a device communicable with the control-relay apparatus; and a device control part that, when the device data obtained by the information obtaining part satisfy the condition indicated by the control request data recorded in the recording part, performs control including the contents indicated by the control request data, with respect to the device.