This paper examines the relationships between diverse technical design strategies and competing conceptions of ecological place making. It highlights the conceptual challenges involved in defining what we mean by calling a building “green” and outlines a social constructivist perspective on the development of sustainable architecture. The paper identifies six alternative logics of ecological design which have their roots in competing conceptions of environmentalism, and explores the ways in which each logic prefigures technological strategies and alternative visions of sustainable places. Finally, the paper discusses the implications of the contested nature of ecological design for architectural education, practice, and research