Yes / The concept of sustainable development implies that social, economic and environmental objectives should be delivered together, and that they can be achieved through enhanced community participation. The concept of social capital indicates how these objectives interrelate, implying that community involvement enhances trust and reciprocity, thus promoting better governance and greater prosperity. This paper draws on a survey of Community Waste Projects to explore how these concepts can inform investigations of community projects. It argues that the concepts provide useful guides to research and debate, but highlights the resource requirements of empirically confirming the claims of the social capital perspective.