A home automation apparatus using a digital television receiver for use in a building is provided. In particular, the apparatus contains a signal processor, a memory unit, a microprocessing unit, a display unit, a sensor input unit, an interface unit, and a controller. The signal processor inputs a television signal and processes the television signal to produce a processed signal. The memory unit stores the television signal and the processed signal based on control signals from the microprocessing unit, and the display unit displays the processed signal as an image. In addition, the sensor input unit is connected to a first sensor, detects a first status of the first sensor, and outputs first sensing data which relates to the first status. Furthermore, the first status relates to a first state of the building, and the first sensing data is output to the microprocessing unit. The interface unit receives an external signal from an external device and the processed signal from the signal processor and selectively outputs the external signal and/or the processed signal to the display unit. The controller is connected to a first appliance of the building, inputs a first command from the microprocessing unit, and outputs a first appliance control signal for controlling the first appliance in accordance with the first command.