Through a comparison with designated cultural heritage, this study examined the characteristics and limitations of the repair system for modern architectural heritage. From studying the repair system in terms of planning, on-site survey, and construction phases, it was revealed that the basis for designated cultural heritage stems from the Act on Repair of Cultural Heritage and related regulations, guidelines and standards, and repair work is carried out under a distinct repair system governed by the Act on Repair of Cultural Heritage, with exceptions applied from the Building Act. Meanwhile, the repair system for state registered cultural heritage reflects the unique nature of the registered cultural heritage system, for which utilization is a premise. This means that heritage value may be affected by the repair process itself. The planning phase lacks procedures for the confirmation and inspection of conservation value, while the on-site

survey phase not only involves a high possibility of physical alteration due to the application of the Building Act and other relevant laws, but also lacks institutional safeguards to prevent damage when the conservation value is located outside the building or when the scope of alteration is less than ¼ of the exterior area. Furthermore, with the exception of national subsidy programs, measures for repair management are lacking throughout the on-site survey and construction phases. Also noted was the lack of specialized repair technology research for modern architectural heritage, including historical and state registered cultural heritage.

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