Transformation of urban landscape value perception over time: a Delphi technique application Ayşe Kalaycı Önaç & Tanay Birişçi Received: 25 June 2019 /Accepted: 29 October 2019 # Springer Nature Switzerland AG 2019 Abstract The developments in information technolo- gies have changed the values shared in the urban society and the urban dwellers’ profile over time. The projects and applications that will enable the cities to reach the standards of the modern world cities have been compul- sory. The concept of urban transformation has been put forward in order to solve the problems that arise in the cities and to increase the quality of life of the urban dwellers. The quality of the social and physical structure determines the quality of life in urban areas. Urban natural and cultural landscape value concepts have a broad context which includes many tangible and intan- gible components of the cities. Urban landscape values are the strongest factors in determining and influencing the quality of urban life due to their scope. In this study, urban landscape values of today’ s cities on the basis of changing social, ecological, economic, and cultural norms have been determined by gathering the opinion of 13 experts through Delphi technique. In addition, the possible effects of urban renewal applications on urban landscape values were also determined by the data gath- ered. At the end of the study, 15 natural and 20 cultural urban landscape values were determined and it was concluded that the urban renewal applications have a direct impact on the natural and cultural landscape values of an urban area. As a result of the study, we identified the perception of natural and cultural urban landscape values in the cities under the influence of globalization in accordance with the purpose of the study and discussed the possible effects of urban trans- formation practices on natural and cultural urban land- scape values in cities with a dynamic structure and in constant interaction with the living society. In addition to creating resources for subsequent similar studies, the present study also presents the urban parameters which must be taken into account in all processes including design, implementation, and monitoring stages together starting from the planning stage of urban transformation practices. Keywords Urban natural and cultural landscape values . Urban renewal . Delphi technique Introduction With the Industrial Revolution, rapid population growth began in cities, which became production centers, and the number of people living in cities has increased rapidly since (Cetin et al. 2017; Cetin and Sevik 2016a, b). While cities have been production centers for the past 300 years, they have also turned into settle- ment areas where consumption-oriented investments came into prominence and the service industry became prevalent (Tatlıdil and Tatlıdil 2002). Turkey lived through a period of rapid urbanization accompanied by Environ Monit Assess (2019) 191:741 https://doi.org/10.1007/s10661-019-7935-9 A. Kalaycı Önaç (*) Faculty of Architecture and Engineering, Department of City and Regional Planning, İzmir Katip Celebi University, Izmir, Turkey e-mail: ayse.kalayci.onac@ikc.edu.tr T. Birişçi Faculty of Agriculture, Department of Landscape Architecture, Ege University, Izmir, Turkey Content courtesy of Springer Nature, terms of use apply. Rights reserved.