Strengthening Circular Urbanization Based on Regional Material Cadastres

Urbanization, coupled with prosperity, is a major driver of building material consumption. As urbanization and prosperity grow, dynamically expanding societies will worsen the carrying capacity problem. Shifting from linear to circular urbanization models is key, aiming to close, slow, and narrow material flows. Understanding the materiality and dynamics of existing structures is crucial for designing these strategies, and regional material cadastres offer valuable support. This paper introduces the concept of regional material cadastres and provides examples of circularity strategy simulations based on German examples. Challenges, opportunities, and specific considerations for applying this method in areas with intense urbanization dynamics are discussed in an outlook, accompanied by a suggested research agenda. The urban city region of Hanoi is used as an example, considering previous research activities in the region.