This chapter provides a case study of building a knowledge management system for collaboration between local governments. It describes the management and development of such a system including Web sites and online search and submission of collaborative agreements. It also stresses the importance of coordination and management support for a multi-party development team. Data quality assurance should also be an integral part of the data collection and migration from a paper-based to an electronic system. The authors hope to shed light on the interrelated components of building a knowledge management system on collaboration. Moreover, the ?ndings of the case study inform the practice of managing a multi-party development team.