Abstract
RFID assisted building information recording and tracing tool was developed. The IC tags were installed in the building during their construction process as a key to receive the information. In the system the visual information and the building materials' information such as the manufacturing companies and mills can be searched by the help of the code written in the IC-tags. And the detail information of the builders and the construction and renovation history of buildings can also be searched in the tool. The system was applied to the retrofitting process of the exhibition hall existing in the Building Research Institute.