The rapid economic development of Singapore has been attributed to its plan-rational technocratic elite, according to the developmental state model. However, few studies have addressed the impacts of the country’s deeply entrenched developmental state tradition on its environment and environmental governance. This article establishes the nexus between these two by examining Singapore’s transition into a garden city. It demonstrates how the Singaporean government has maintained a top-down, nonparticipatory approach to policy making in line with the postulations of authoritarian environmentalism and how this mode of governance is related to the developmental state legacy. While Singapore’s environmental policy resulted in its international reputation as a model green city with a remarkable expansion of green spaces and infrastructure, these outputs signify the results of the developmental state’s deliberate planning and management based on a utilitarian view toward nature rather than on the outcomes of an organic and comprehensive transition to a green society.