Abstract: In today’s world automation has played a key role in developing human’s life and enhancing safety and security protocol. Mobile phones nowadays are very common to all people. Everyday household work like switching ON /OFF the fan or lights, decrease or increase in air conditioner temperature can be easily done using smartphone. Today home automation system (HAS) has been a key area of research in recent times. Home automation using android platform eliminates the process of individual involvement and enhancing easier and faster daily household needs for everyone. The home automation system (HAS) designed on android platform has been interfaced with 8 bit microcontroller i.e. arduino to control the home appliances using relay. Bluetooth has been used as the most reliable and efficient technology for short range communication. Different sensor has been used which are illustrated in details below. This paper provided a novel approach enhancing automation in household works and eliminating the traditional method of switching.