Intelligent Home Automation Systems are gaining importance in today’s technology dependent world. Home Automation Systems provide a sense of security and comfort. Using Wireless technology like ZigBee the cost of wiring of Home Automation System can be reduced as well as a reliable and secure communication can be achieved. ZigBee is a low data rate wireless network standard with added features like low-cost, low power consumption and fast reaction. ZigBee is most suitable for small area networks like homes. This System also allows controlling of devices using Voice commands which reduce user interaction with system directly. This System uses SAPI (Speech Application Programming Interface) a Microsoft Application to enable voice recognition when a user gives voice command to the system. This system contains of three main components: i) Intelligent Home Server with ZigBee module, ii) Intelligent environment detection sensor modules and iii) Voice command controlling module. The various features of the system include turning any home appliances or devices, playing media applications, downloading RSS feeds, sending mail, etc.