The pattern of the business enterprises locations along with the organization of the industrial activities establishment are of almost importance in the studies conducted for regional and urban planning. Therefore, the present study aims to investigate the patterns of the industrial enterprises establishment in the metropolis area of Tehran in order to get a better understanding of the industrial parks position in attracting industrial factories in the region. This descriptive analytical study uses a wide range of figures, documents, studies and reports on the topic under study. Findings on this metropolis region reveal that there is a lack of concordance in policies viewpoints and spatial-physical plans in region’s anatomic expansion and retarded facilitation of the Parks with infrastructures. This lack of accordance scatters industrial activities and disrupts the spatial-physical nature of the area. Accordingly, the results of the present study demonstrate that scattered and undocumented factories established in the region possess a much greater share compared to the organized factories in industrial parks Yet, unsystematic establishment of industrial complexes in agricultural fields and main transportation roads have devastated the fields, gardens and other green spaces and imposed heavy traffic on the roads
