Introduction -- Sustainable Spatial Planning in Democracies -- Democratic Acceptance of Spatial Planning Policies -- Determinants of Democratic Acceptance: A Two-Level Analysis -- The Motivation behind Democratic Acceptance: A Case Study -- Framing Effects on Democratic Acceptability: An Experimental Approach -- Discussion.-Conclusions.This book examines the democratic acceptance of spatial planning measures, using Switzerland as a case study. The currently inefficient land use in industrialised countries calls for new spatial planning policies. Yet governments have largely failed to implement innovative policy measures, which may be due to a lack of democratic acceptance. To date, little is known about the democratic acceptance of spatial planning measures. Switzerland offers a promising candidate because of its direct-democratic system, which allows citizens’ preferences for specific policy measures to be directly measured. In this work, the democratic acceptance of spatial planning instruments is investigated from various perspectives in the form of original empirical studies, which are embedded in an innovative conceptual framework. It demonstrates that not only spatial planning instruments in general, but also incentive-based instruments in particular, generally enjoy high acceptance. This finding is remarkable, considering the fact that efficient land use instruments have only been marginally implemented. Addressing the needs of both academics and land use practitioners in the private and public sector, the book shows that in order to improve the democratic acceptance of spatial planning measures, attention must be paid to their context, content and the means by which that content is provided.