Recently, interest in collaborative management practices in high-rise building design has grown significantly, as evidenced by an increasing number of publications in the last decade. However, existing research does not comprehensively address the effectiveness of these practices in design performance, nor does it provide a prioritized list to facilitate their implementation to improve collaboration and coordination in this crucial phase. This study aims to propose collaborative management practices specifically designed for the design phase in high-rise building projects to enhance the productivity of design teams and ensure project success. A three-step methodology was adopted: (1) identify activities that do or do not contribute value to design management; (2) describe relevant collaborative management practices; and (3) validate the relationship between these practices and design team performance. As a result, 15 key practices were defined, highlighting the five most important: phased project planning, long- term supplier relationships, solution implementation and tracking, verification and documentation of results, and efficient organization of project information. While these practices have proven effective, their validation in real projects and adaptation to different contexts, such as smaller-scale projects, are areas for future study.