Buildings are designed for users to inhabit them. Their existence without user remains tornfeel like they are a sculpture. On the other hand, people need to occupy a building for discussion,rnentertainment, and business matter. And this leads to the stand, framing a social space with inrnbuildings that are responsible to human interaction is mandatory. This interaction represents thernhidden communication between occupants and variety spaces of a building. Named shortly in onernword as â€LIMINALITYâ€. In commercial buildings, this concept owns a space called “LiminalrnSpaceâ€. It stands for public spaces with in buildings, such as lobby, reception areas, atrium,rnvertical and horizontal circulations and so on. Objective of the research is to study the value ofrnliminality in architecture, while the conception, existence, and sustenance of liminal spaces withrnin commercial buildings comes in to practical practice within commercial buildings in AddisrnAbaba city. Meaning, as those spaces are for the public, how does they response that? in thernconception stage and beyond this how can they be an engine to the building by attracting morernpeople, and place them with in their parts for better business exchange? in their existence concernrnas well as making the building center of attraction to the neighborhood, which guaranty it`srnsustainability through continuous access of variety occupants. Having this objective buildingsrnwithin the city are found as they have a knowledge gap in this study area.rnThen to study the gap, different methods are used for data collection. Such as, providingrnquestionnaires for different occupants (users, Tenants, Owners/Building Administrators) andrnprofessionals or architects) of a building to gather variety of information from differentrndimensions. Literature review discussing core points of the study area with the help of liminalityrnconstructive theories and quotations from experienced professionals are presented. And Casernstudies (Local and International) that have positive and negative characters of liminality arernaimed to study the defects from building with obstacles and how to solve them from the structuresrnentertaining liminality in extraordinary way.rnThen through analysis different findings are derived. From conception point of view, asrnthose spaces can be a means of linking to urban and commercial spaces, curving out identity ofrnthe building, Space for the collective, Space welcoming activities, and Positioning occupants withrnin liminal spaces having three dimensional physical as well as visual access, are to be consideredrnwith respect to illegal architect`s activities. In the Existence of liminality, presence of variety ofrncirculation routes and space for dynamic activities to attract people as well as variety of activitiesrnthrough lively user`s interaction in deep sensory experience that pushes users to rank them inrnfavorite liminal space list with in the building and from other competitive buildings, are to berninterpreted well. Finally, the concern of timely changes in respect to visual and Physical comfort,rnMaintenance Stimulating interaction and Fitting to the intended purpose of the liminal spaces,rnare found to be sustaining factors of liminality. Those are constructive parts of liminality withrnvariety intentions, grouped as these three stages of liminality ..........