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The purpose of this research is to establish real-world infrastructures of a future high-tech city using construction technology (CT)-IT fusion. This paper is composed of three parts; updating accurate geo-spatial database using construction drawings, providing the information of the 3D geo-spatial database via Web service. Building databases for stationary and mobile objects inside of structures and developing technologies to provide an indoor positioning service system. Developing technique about gaining/providing locational and morphological information from/to construction-related objects such as structures, workers, equipments, and building material. This research will help in the future development of U-City and autonomic integration of GIS and construction.