Circular building has been increasing in popularity over several years. The idea being that we should not use resources only once and then discard them, but continue using them in new products. The construction industry has responded to this by designing 'circular' buildings that can be disassembled at the end of their functional life. This leaves the question open of what to do with the current buildings stock. Since the building stock only grows with approximately 1% a year, the lion's share of buildings that will be demolished in the next 50 years has already been built. This research explores five cases that are trying to solve this issue in different ways. The case studies are used as a basis to identify drivers, barriers, and opportunities for circular demolition and component reuse. The main drivers are environmental, societal, and behavioural in nature. Whereas the main barriers are economic, behavioural, and governmental. Opportunities for entrepreneurs and governments have been identified to overcome these barriers.

The problem adressed in this text is the fixation of capacities to interact by laws, which limits the realization of valuable transformative potential in the built environment. The purpose of this text is twofold: First to uncover the processes behind such fixation-through-laws for the built environment and; Second, to propose a different (Deleuzean) attitude towards power which argues for a release of this fixation and urges the limitations of such laws to be opened up. To this end, Chapter 1 elaborates how a prioritisation of interests contructs a dominant collective mode that excludes alternative tendencies. Chapter 2 elaborates on the fallacies incorporated in the process of abstraction to come to such a priority of interests for a collective. Chapter 3 suggests an alternative, Deleuzean, attitude towards power which promotes differences over their abstraction. Chapter 4 then applies this Deleuzean understanding of power to a housing block in Amsterdam, the Netherlands. The advice is to start with opening up the most blatant fixation of use and form in the municpality’s place-specific ‘Bestemmingsplan’ law. Afterwards, chapter 5 concludes that by steering away from fixated hierarchies constructed through abstraction, we arrive at a post-humanist, flat ontology. Using it, we can apply a strategy of promoting new understandings constructed by experimentally opening up, or ‘speculative loopholing’, and thereby delimit transformative potential in our built environment.