The notion of ‘tectonics’ has been developed and applied throughout architectural history as a critical means through which to position the discipline in its context; the societal, technological as well as the physical. Today the complexity of contextual relations and challenges that govern architecture are multiplying and governed by an over more present call for a viable, ecological, human development of the built environment. With the title ‘Circular Tectonics’, this mini symposium investigates the potential of tectonic architectural theory and method for arriving at ecological continuity, -means, -relations, and –innovation in architectural practice. Hence, we invite critical contributions that discuss, develop, and apply tectonics related to questions such as ‘design for disassembly’, ‘re- and upcycling’, ‘life cycle scenarios’ ‘transformation versus preservation’ etc.