How do professionals and citizens collaborate in the design and implementation of community development projects? What are the motivations for co-creation of these projects? What is the impact of local context on making this possible, or preventing it? And what can we learn about ways to better collaborate? This research aims to study the collaboration between professionals (working in the community sector) and citizens in decision-making, design and realization of community projects, otherwise known as ‘co-creation’ or ‘co-production’. This research is part of a larger comparative project of France, England and Quebec.