In order to professionally, objectively, and efficiently manage public investment projects in Seoul, it is necessary to analyze the patterns of public investment projects in Seoul and establish a preemptive response strategy. In this study, investment review data analysis, Seoul policy stance survey, and survey were conducted to comprehensively analyze the patterns of public investment projects in Seoul. As a result of the analysis, major patterns of public investment projects in Seoul were identified as complexation of facilities, multi-dimensional use of land space, balanced development projects linked to regional characteristics, maintenance and improvement of existing infrastructure, and expansion of types and management scope of PPP.

Detailed analysis was performed on individual analyzed patterns to derive implications and future studies. In relation to the complexation of facilities, it is necessary to study measures to increase operational synergy, user benefits, and the effect of increasing demand. The multi-dimensional use of land mainly occurs in water reservoirs and roads, and it is necessary to improve the multi-dimensional utilization-related system and supplement the analysis method. In order to analyze the balanced development project, objective judgment standards for regional characteristics and regular regional status surveys will be required. In order to respond to the aging of the city, it is necessary to establish a management system for old facilities at the city level and to prepare criteria for determining investment priority among old facilities. Lastly, it was found that detailed research is also necessary according to the expansion of the field of PPP projects.

In order to prepare for various patterns and future trends in Seoul’s public investment projects, it is necessary to establish an efficient project management system at the Seoul level to respond to the changing environment. In addition, it is necessary to support systematic decision-making through various basic studies (benefits, costs, policy factors, etc.) related to the patterns of public investment projects.