In post-war Japan, many cityscapes have changed significantly with the development of high-speed transportation networks. Focusing on the process by which the normative way the city's future and its realization is imagined―that is, how the paradigm of city planning is accepted by the entities involved―the dynamics of how urban spaces resulting from this social processare reflected in space is investigated. The target area of this study, around JR Sakudaira Station, started campaigning for a bullet train in the 1970s. However, a centralist paradigm took hold due to developmental politics in the economic sector and the model of a modern city in the technological sector, and planning was relegated to the central government leadership. On the other hand, changes in the industrial structure and an aging farming population strengthened the development paradigm to promote a shift toward urban land use. The agricultural cooperative representing the interests of farmers in land use promoted land readjustment projects around Sakudaira Station. This project initially progressed through a government-led, design-centric approach. However, due to a lack of concrete planning ideas to counteract market principles, there was a push to change to a liberal paradigm that emphasizes the free market. Thus, the region's leading commercial cluster was formed with the focus on large-scale stores, contrary to the original plan.