The purpose of this study is to find out how we can improve the Registered Cultural Properties System in order to preserve and utilize of modern buildings which have been damaged and destroyed. The main object of the Registered Cultural Properties System is to build the cultural properties preservation system. But nowadays, it is very difficult to preserve modern buildings in city areas because of the desire of development for the site. So we need to approach economically in order to compensate for Registered Cultural Properties System. In this study, I suggested 4 type of system to preserve modern buildings by economical and lawful approach.