Enterprise architecture (EA) describes the fundamental structure of an organization from business to IT. EA as a practice as well as a research topic has been around for several years. However, existing methods largely neglect the existence of time which is essential in order to systematically approach EA planning. The article at hand builds a process model for EA planning as a design research artifact. We therefore use another more general design research artifact – a method for process engineering – in order to systematically build our proposed planning process. From a design science research (DSR) perspective we demonstrate how elements of the DSR knowledge base can be applied to create new DSR artifacts and how DSR might build a toolbox as it is available in other mature engineering disciplines.