The concept of Mosaic Governance rests on relationships grounded in local context and puts forward ideas about how these relationships can be catalysed for transformative change. As part of the research project VIVA-PLAN we designed a Working Package where some of these assumptions have been put forward for further experimentation and testing. As part to this our project team partnered with a local NGO Läsfrämjarinstitutet for the organization of an on-site local stakeholder event which was held on the 25th of August 2021 in Södertälje (Sweden). The ambition for this event was to bring together ideas and insights from two different and now emerging engagement methods: i) hackathons and ii) co-creation, to create opportunities for discussion, visioning and local engagement. At this event, we shared data (summarised in data visualization sheets) collected in the course of our project about local conditions in Ronna, a residential area in Södertälje. In total, 15 participants attended the event, all affiliated with public or private organizations that are active in or near Ronna with a clear role and contribution to community building there. The event helped to unpack some of our findings and to further discuss challenges that emerged from data collection in Ronna. The event was a productive gathering where important questions were raised and discussed about the challenges and opportunities of the Ronna residential area, and how they align with ideas about more sustainable living environments as currently advanced by Swedish planning policy