A device management system includes a device installed in a building, a control terminal connected to the device, and a management apparatus connected to the control terminal via a network. Both the control terminal and the management apparatus are configured to be capable of acquiring a control command that is created by a user. The control command that is created by the user is acquired by at least one of the control terminal and the management apparatus. Based on the control command that is acquired, control of the device is shared and executed in at least one of the control terminal and the management apparatus.