Book excerpt: This book directly links the notion of the commons with different design praxes, and explores their social, cultural, and ecological ramifications. It draws out material conditions in four areas of design interest: social design, commons and culture, ecology and transdisciplinary design. As a collection of positions, the diversity of arguments advances the understanding of the commons as both concepts and modes of thinking, and their material translation when contextualised in the domain of design questions. In other words, it moves abstract social science concepts towards concrete design debates. This text appeals to students, researchers and practitioners working on design in architecture, architecture theory, urbanism, and ecology.