Postmodernism, in all its various facets, represents an architectural layer that conservation theory and practice are increasingly addressing. Postmodern buildings often integrate structural and non-structural components that are equally vital to the work, necessitating a more nuanced approach. While established methods provide a solid foundation for the recording and evaluation of certain aspects in heritage conservation, others require entirely new strategies. By examining the definition of terms and chronological classification, as well as the concept of authenticity and the balance between physical substance and visual appearance, this study explores consider-ations for the heritage inventory of postmodern architecture. These reflections are illustrated through two case studies: the Forellenweg housing estate in Salzburg and the Spa and Thermal Hotel in Bad Tatzmannsdorf.