Technically-oriented architectural spaces today are getting complicated because the building contains a number of electronic facilities and complex structures. Furthermore, the advent of the ubiquitous environment enabled the building to provide various services to users and accelerated the importance of architectural visualization as problem-solving and communicating tools. It is recommended that architectural visualization has been more intuitive and effective to support the design decision and collaboration. In this manner, this paper intends to define the role of current architectural visualization with considerations of previous research and related works in the practical field and proposes the appropriate method of architectural visualization. Also, in order to evaluate our idea, we recommend a prototype system based on dynamic and semantic representation with the avatar. It is a kind of simulator for the design of ubiquitous smart space and can deliver to users the better comprehension in how technological oriented space will be constructed and utilized.