Uncertainty is a major factor in urban development as a consequence of a changing society. Major theoretical approaches to urban development, such as place-based leadership or coproduction, emphasize the importance of the public sector. This study aims to enhance the understanding of urban development processes as a collaborative and participatory concept through social innovation. We apply the concept of socially creative milieus to analyze the emergence of social innovation under the constraint of uncertainty. The criteria ‘agents of innovation’, ‘adopters’, ‘diffusion channels’, ‘constraints’, ‘inertia’, and ‘impacts’ are analyzed using a holistic case study in the field of urban development. Our results show that the presence of high social capital supersedes the coercive power of the public sector. By applying the creative milieus approach, environments like the density of networks and contacts in the governance of urban places make innovative development possible.

由于社会不断变化，不确定性是城市发展的一个主要因素。城市发展的主要理论方法，例如基于地方的领导或合作生产，都强调公共部门的重要性。本研究旨在通过社会创新增强对城市发展过程作为协作和参与概念的理解。我们运用社会创新环境的概念来分析不确定性约束下社会创新的出现。通过城市发展领域的整体案例研究，对“创新推动者”、“采用者”、“扩散渠道”、“约束”、“惯性”和“影响”等标准进行了分析。我们的结果表明，高社会资本的存在取代了公共部门的强制力。通过应用创造性的环境方法，