FACTORS AFFECTING THE PERFORMANCE OF HIGH-RISE BUILDING CONSTRUCTION PROJECTS IN JAKARTA

The construction of high-rise buildings in Jakarta has grown rapidly in recent years as a response to limited land availability and the increasing demand for commercial, residential, and mixed-use spaces in urban business areas. High-rise projects are highly complex, involving intricate structural design, vertical logistics challenges, demanding foundation and seismic requirements, and intensive multidisciplinary coordination. These complexities directly affect project performance, particularly in terms of time accuracy, cost efficiency, work quality, and site safety. This study aims to identify the key factors influencing the performance of high-rise construction projects in Jakarta using the Relative Importance Index (RII) method. The analysis highlights five factors with the most significant impact: construction methods (RII = 0.8236), workforce training and development (RII = 0.7691), material availability (RII = 0.8127), project team communication (RII = 0.8127), and construction supervision (RII = 0.8018). The findings indicate that successful high-rise projects in Jakarta rely on strong synergy between technical aspects, human resource management, and effective supervision systems. Proper construction methods, improved workforce competence, and strong team coordination are key to enhancing productivity, performance, and overall project quality.