Discussions on conserving historical towns and architecture have continued with rapid urban growth and higher demand for urban center development. In academia, research on the area management system for effective conservation of the historical environment has been published since the 1990s, which have culminated in earnest discussions from the late 2000s. In August 2018, the Cultural Heritage Administration introduced a system for registering cultural assets by streets or areas and had pursued the “Modern Historic-Cultural District” in connection with urban revitalization and registering areas where historical and cultural assets of the modern era are agglomerated in streets, towns, and landscapes. Access to historic environments that are both a place of historical value and a place for living needs to be approached individually according to the presence of different cultural properties. This study aims to understand the characteristics and limitations of the “Modern Historic-Cultural District,” analyze domestic and overseas systems regarding historic environments, and propose a survey and planning framework for the sustainable management of “Modern Historic-Cultural Districts.”