Cadastres have been developed gradually with technical evolution and social needs; but the traditional cadastre (2D) could not satisfy new requirements from society where the 3D legal and spatial representation of properties is concerned. 3D cadastres have been introduced including surface and subsurface rights. In the past, the utility is laid to underground without any recordation at all or with improper recordation of the situation concerned. Two disasters in Ahyundong and Sangindong prompted the Korean government to correct inaccurate information of underground utilities and develop a system for managing these utilities. But the availability of primary data of underground utilities is still depending on the willingness of co-operation of utility companies and organizations.
Two different maps (cadastral and utility maps which are based on topography) are used for different domains in Korea. These maps have differences in geo-reference and registration. In this research, the problems of Korea’s spatial data and the reasons for these differences are discussed based on data integration and data sharing perspectives. The data integration method is addressed by a prototype developed while the prototype shows the possibility of successful data integration of two maps combined. Furthermore to find a suitable business model in Korea, a comparative study has been performed with the Netherlands . The proposed business model expects to support in the improvement of the Korean spatial data infrastructure.