This study explores the issues of brownfield regeneration in marginal areas, defined as smaller, long-term derelict sites with contamination or as an isolated location where the industrial infrastructure has largely changed. We focused on Osaka, Japan, which has many brownfields in marginal areas. Former representative marginal areas are chosen in the East Osaka District to examine the current condition of brownfield sites. Results are as follows; For small and middle-sized manufacturing facilities, where soil contamination has been found, sites remain untreated following the closure of the facility. Almost all sites not investigated for soil contamination are not redeveloped.
