“…This reveals the lack of practical feasibility of master plans as strategic planning instruments. (Valtonen, Falkenbach, & Viitanen, 2017;Mäntysalo, Saglie, & Cars, 2011;Mäntysalo et al, 2014a; see also Nyman & Mäntysalo, 2014;Rannila, 2018. ) To 'fill' the widening gap between the abstract master plans and the development-driven detailed plans, new non-statutory planning instruments have emerged for the strategic coordination of development projects, such as 'development plans' and 'area studies' in Sweden and Norway, respectively, and urban centre development plans or programs in Finland (Mäntysalo et al, 2014a).…”