Urban Transformation in Japan: The Challenge of Brownfield Redevelopment

As urbanization accelerates, cities worldwide face the dual challenge of sustaining economic growth while mitigating environmental degradation. Brownfield redevelopment has emerged as a key strategy within the sustainable urban development agenda, particularly in industrialized nations seeking to revitalize underutilized or contaminated land. While extensively studied in Western contexts, brownfield redevelopment in Japan remains under-explored in English-language scholarship. This paper examines the Musashi Kosugi area in Kawasaki City as a case study to analyze Japan’s evolving approach to brownfield regeneration. Once a major industrial hub, Musashi Kosugi experienced significant economic restructuring in the 1990s, leaving behind large tracts of brownfield land. In response, local and national governments implemented a series of legislative and planning interventions to reclaim and repurpose these sites for residential and commercial development. Through a mixed-methods approach that integrates secondary policy analysis with primary data from stakeholder interviews and field observations, this study investigates the key policy mechanisms, governance structures, and socio-economic outcomes of brownfield redevelopment in Japan. The findings highlight the effectiveness of hierarchical planning frameworks, land reclamation policies, and investment incentives in facilitating urban transformation while also revealing persistent challenges related to environmental remediation and stakeholder coordination. Weak coordination between land-use and environmental policies, limitations in the Soil Contamination Countermeasures Act (SCCA), and inadequate financial support mechanisms hinder effective remediation efforts. By contextualizing Japan’s brownfield regeneration efforts within broader global urban sustainability discourses, this research provides valuable insights for policymakers and planners navigating similar land recycling challenges in industrialized and rapidly urbanizing regions.