The year 1980 is a breaking point in regard to transformation of governmental paradigms in Turkey, like in the rest of the world. This shift has brought along structural transformations over many fields including state and social structures as well as planning approach and urban spaces. During this period identified as neoliberalism, commodified urban space is turning into a scene for practices of market-oriented economic development and elite consumption. In cities, interventions which are shaped by public-private partnerships and are developed in line with the interests of capital, are increasing day by day. In this period, public interest that constitutes the main principal of planning has begun to cease to be the essential value of the planning implementations. Through the project based approaches, field of planning is now being turned into a non-functional act and is being discredited. In Turkey, Istanbul is the most affected city from interventions forming the urban space depending on relevant legislation and planning policies' regulations made in accordance with economic policies. In this article, planning legislation and amendments from 1980s are evaluated in the context of public interest besides that urban interventions in Istanbul are discussed depending on relationships with planning policies and legislations, spatial distributions and the topics which they constitute a contradiction about public interest. In this study 36 years from 1980 to present day are investigated within two period which are 1980 to 2000 and after 2000 and the similarities/ differentials between periods are evaluated.