Purpose: The purpose of this study is to examine how the process of creating and implementing sustainability competencies across a university illuminate dynamics of organizational change. The push to advance education for sustainable development in higher education will likely require transformation of existing policies and practices. A set of shared sustainability competencies could guide the integration of sustainability throughout an institution. Design/methodology/approach: This paper reports on a case study of one US university, the University of New Hampshire (UNH) that developed institutional-level sustainability competencies. The process used to create and implement sustainability competencies is outlined, and key factors that influenced the associated organizational change are identified. Findings: Very few US universities have institutional-level sustainability competencies. At UNH, drivers of organizational change such as overcoming disciplinary boundaries, developing a common vision and working from the bottom-up enabled the creation of institutional sustainability competencies, but the same processes were not enough to drive deeper implementation of the competencies. Originality/value: This paper not only identifies the context-specific drivers of the development of institutional sustainability competencies, but also identifies universal themes that can be applied to other institutions embarking on a similar process. Additionally, this paper serves as a foundation for future research exploring how the process of creating institutional sustainability competencies may be linked to how effective they are in shaping subsequent sustainability education.