This paper considers design and implementation of intelligent Space (iSpace) which is a space with many distributed sensors and actuators. iSpace system should have flexibility and scalability so that we can easily change the configuration of embedded devices and switch applications based on the situation. To realize such a system, iSpace framework requirements are discussed and a layered structure which consists of four layers – the sensor node, basic information server, application and actuator layers – is proposed. The structure makes it possible to fuse information extracted by each sensor node effectively and provides system flexibility and scalability. A componentbased iSpace implementation is also addressed. The designed framework is implemented using RT (Robot Technology) middleware.