The paper presents results from a recent doctoral research (Stemmer in preparation) dealing with methods of cooperative landscape assessment using web-GIS technology. The aim of this research was to develop a method that helps gaining local landscape knowledge and support planning and decision-making processes. The focus was on so called soft-data on landscape perception as well as valuation of landscapes. Due to their specific education experts tend to per­ceive landscapes mainly in cognitive ways, whereas members of the general public are mainly bounded to landscapes in aesthetic and emotional ways. These two perspectives could also be described as positivistic and constructivist approaches to landscape and, at first sight, they seem highly incompatible. Most constructivist phenomena do not fit established positivistic planning methodologies and tools, such as geographic information systems. However, public landscape perception is increasingly important for decision making. A general consensus on what landscape is and what it should look like is difficult to establish; this is mainly because, in postmodern societies, values differ greatly and due to pluralisation of lifestyles and cultures. To integrate public landscape perception into geodesign processes is a challenge that the work presented in this paper will try to meet. Constructivist theories of landscape perception are applied to create a framework for the analysis of statements on landscape that are formulated by members of the general public. The aim is to deconstruct statements that are based on emotional and aesthetic evaluation into a format that meets the needs of geodesign processes. In an online survey members of the general public were asked to draw areas that they perceive as landscapes on a web-GIS map and to describe the landscape using their own words. Based on this information, and applying the approach described, above the output of the survey is analyzed. Two case studies have been conducted that demonstrate results of the approach.