As the life cycle of buildings increases in the era of low growth, the importance of maintaining deteriorated buildings is emerging. According to the 2018 National Building Statistics, the proportion of buildings more than 30 years old after construction is about 37.1% of the total building, which is increasing every year. In particular, due to the massive supply of housing in the 1990s, the number of deteriorated housing that are more than 30 years old since 2020 is expected to surge. However, only 1.7% of the buildings are subject to maintenance under Building Act and Special Act on the Safety Control and Maintenance of Establishments.

Despite the increase in the dismantling, demolition, and remodeling of existing buildings, collapse accidents continue to occur due to insufficient safety measures at the construction site. In addition, the demand for fire safety is increasing due to subsequent large fire accidents in existing buildings.