Sustainability practice in urban planning is today conducted with a global outlook in view of the Agenda 2030 and other global sustainable development agreements. Urban planners operating at the international level are thus not only involved in traditional planning topics like transportation or affordable housing but also need to delve deeper into issues of partnerships and international development cooperation. This research discusses sustainable development partnerships between developed and developing countries by using the Symbiocity Kenya partnership as a case study. It analyzes broad topics around sustainable development, the relevance of notions of developed and developing countries in present times, the export of sustainable urbanism and the ways in which planners can analyze abstract components of partnership projects. It then zooms in on the Symbiocity Approach discussing it in various contexts and eventually in the context of Kenya and Sweden. The final section deduces lessons for future projects of this nature.