Today, we are living in an era of city. Many cities around the world are exposed and vulnerable to natural disasters and environmental pollution due to rapid urbanization and population concentration. Most of these city problems occur in space and as a solution to all these problems, Digital Twin is continuouslybeing introduced. A digital urban space infrastructure and multi-dimensional spatial data analysis are required to effectively solve and deal with various city problems. One of problem in land administration aspect, to change ownership and get a permit take a long time. In order to improve this situation, digital twin concept is proposed. It’s operation and management became possible as the information systems took a transition from paper to computerized files, from files to integrated databases, from two-dimensional to three-dimensional data, and as transition took place, the need for a virtual urban space or "DigitalTwin" that can integrate distributed urban data into one came to fore. In this study, the new preprocess was suggested to use Digital Twin concept in order to reduce time line and to make an efficient work process for land administration.

Recently, the demand for more precise and demand-oriented customized spatial information is increasing due to the 4th industrial revolution. In particular, the use of 3D spatial information and digital twins which based on spatial information, and research for solving social problems in cities by using such information are continuously conducted. Globally, non-face-to-face services are increasing due to COVID-19, and the national policy direction is also rapidly progressing digital transformation, digitization and virtualization of the Korean version of the New Deal, which means that 3D spatial information has become an important factor to support it. In this study, physical objects for cities defined by world organizations such as ISO, OGC, and ITU were selected and the target of the 3D object model was limited to buildings. Based on CityGML2.0, the data collected using a drone suitable for building a 3D model of a small area is selected to be updated through road name address and building ledger, which are administrative information related to this, and LoD2.5 data is constructed and urban space. It was intended to suggest an object update method for a 3D building among data.