‘From Habermas and Lefebvre to Rancière and Mouffe this handbook captures the zeitgeist of planning theory with contributions from some of the most innovative thinkers in their fields.’ Professor Phil Allmendinger

In a changing and often unpredictable globalized world, planning theory is core to understanding how planning and its practices both function and evolve. As illustrated in The Routledge Handbook of Planning Theory, planning and its many roles have changed profoundly over the recent decades; so have the theories, both critical and explanatory, about its practices, values and knowledges. The handbook presents key contemporary themes in planning theory through the views of some of the most innovative thinkers in planning.

The Routledge Handbook of Planning Theory includes a chapter on Evolutionary Governance Theory. The chapter analyses the presence, the origins and the potential of co- evolutionary perspectives in planning theory. It pays particular attention to Evolutionary Governance Theory, as a comprehensive perspective on co- evolution in spatial planning and governance. The co- evolutionary approach to planning presents a middle ground between (social) engineering approaches on the one hand and theories completely disqualifying planning and steering on the other. Both ends of the spectrum have often been criticized for respectively overestimating the steering possibilities of governments and the organizing capacities of markets. Planning theory embedded in governance theory can help to analyse and understand a particular governance context, to delineate the possibilities and limits of planning in that context, and to determine which planning efforts are most likely to have a positive impact. In a co-evolutionary perspective, context as such, and governance context in particular, are never fixed, never stable: all elements and structures are continuously influencing each other.

The co-evolutionary perspective as developed in EGT opens up planning theory for a series of relevant concepts from different disciplines, relevant for the analysis of current and potential forms of planning in a community, while conversely giving theories and practices of planning a firm place within governance. The chapter shows how a co-evolutionary perspective is a very useful lens for both analysis and change, for the development of new planning perspectives or for the deliberate circumvention of a current planning system.