Building South Vietnamese delta settlements in the Whirlwind of climate change

Deltaic settlements worldwide are facing unprecedented challenges. This is especially the case in the Mekong Delta, where high population density, capital, and service provision increasingly intersect to expose vulnerable communities to the adverse effects of climate change. Due to a limited understanding of climate change, the presence of unique hydrological phenomena, and anthropogenic actions, the complex situation of the delta and its settlements has led to the implementation of inadequate architectural and urban solutions. This has caused abrupt socio-economic changes, shifting from an ecological integration mindset to a normative and disruptive approach resulting in the imposition of unsuitable models. Community capacity, which includes low-cost, circular and reuse practices, can offer more ecological perspectives on sustainable building in the delta. Illustrating local in-depth environmental expertise, communities have developed socially and environmentally adapted construction cultures. This paper argues for an alternative paradigm in which cities and settlements promote and integrate local building knowledge to enable architectural and urban forms to play a leading role in the resilience of South-Vietnamese deltaic cities and to mitigate developmental impact on the environment. Findings show a diversity of options and capacities at the local scale and flexibility in housing design. They also show that persistent gaps in policymaking and inconsistent perception of risk affects architectural and urban climate resilience. The discussion and conclusion advance the potential of local capacity in the building of South-Vietnamese deltaic cities, the need to integrate local knowledge and community capacity into policy, and the necessity to better assess local perception barriers to formulate localised, integrated and multisector policies to build resilient and sustainable South-Vietnamese settlements.