It was 15 years since the remodeling system was introduced in 2001 and the remodeling system was implemented due to the amendment of the housing law. From now on, the remodeling will be settled in the direction of important apartment houses, and planning will be the core plan of remodeling. Up to now, the remodeling system has changed according to the market situation, and the planning plan has also changed based on the laws and regulations. In this background, this study summarizes the changes of the regulations related to the remodeling plan and examines the characteristics of the plan according to the changes of the regulations. The remodeling plan can be divided into three periods according to the changes of the regulations, and the contents of the regulations and the characteristics of the plan have been clarified.