“…It is essential to analyse the literature, which describes informal planning, and to understand the role of tools and stakeholders, who influence spatial planning. The outcome of this analysis will help formulate the characteristics of informal spatial planning: − Informal planning process or methods should not replace the existing spatial planning practice of that region, but informal planning should "facilitate formal process" of spatial planning (Reimer et al, 2014;Blotevogel et al, 2014;Briassoulis, 1997;Leibenath et al, 2016;McFarlane et al, 2012;Needham, 2005;Scholl, 2017); − Informal planning adds "flexibility" in the spatial planning process, which allows the planners to focus on a specific problem (Reimer et al, 2014;Getimis & Giannakourou, 2014;Getimis et al, 2014;Newman & Thornley, 1996;Mäntysalo et al, 2015); − Informal spatial planning can help in achieving matured results with the help of "discourses" (Reimer et al, 2014;Getimis & Giannakourou, 2014;North, n.d.;Certomà, 2017;Sartorio, 2005;Syssner & Meijer, 2017;Papamichail & Perić, 2017;Carmona, 2017;Leibenath et al, 2016;Roy, 2009); − Informal planning could also be an "ad hoc" system that is used whenever needed (Blotevogel et al, 2014;Getimis & Giannakourou, 2014;Briassoulis, 1997;Reimer, 2013;Assche et al, 2012); − Informal spatial planning requires a degree of "innovation" to continuously face the challenges of planning (Reimer et al, 2014;Getimis et al, 2014;Roy, 2009;Certomà, 2017;Scholl, 2017); − Informal planning method is a "non-traditional method" of spatial planning, which is not influenced by hierarchy culture of planning…”