Abstract: A building-installation control system comprises at least one interface unit for functional coupling to a building-installation functional unit, and a user status determination arrangement designed to determine a current building user status, wherein on the basis of the current building user status, a control specification for the building-installation function unit adapted thereto is then determined and used for controlling the operation of the building-installation function unit. The user status determination arrangement preferably comprises one or more of the following devices: a building user geodata acquisition device, an appliance usage sensing device, a radio frequency monitoring device and/or a power consumption sensing device that can be coupled to a smart meter.