Abstract
Urbanization in the twenty-first century has experienced a significant slowdown, particularly in the Global North. However, population growth continues to escalate, with most of this increase occurring in the Global South. Most of that growth manifests in the urban environment as informal
settlements. These types of neighbourhoods deploy unique strategies to emerge and grow and can teach us much about the value of neighbourhoods as urban units in an uncertain future plagued by the challenges imposed by climate change, political polarization, and urban conflict. However, literature
on neighbourhoods devotes little time to exploring these urban manifestations as areas of exploration and learning; instead, most of the scholarship focuses on ways to eradicate these places from our cities. As a result of this perspective, I argue that we have overlooked three important lessons
that can be gleaned from informal settlements: incrementality, sustainability, and self-reliance. These characteristics contribute to the resilience of the communities, making informal settlements the predominant neighbourhoods of the twenty-first century. This paper examines global informal
neighbourhood practices, unveiling unique community strategies. It reassesses neighbourhood value and offers insights into the urban changes necessary to tackle the next century's challenges.