Our knowledge of urban areas is constantly being renewed and diversified depending on new data sources. Spatial data plays a particularly major role in this change. Currently the elements of a given city can be analyzed in high resolution and with great accuracy. Such progress guides the observation of the specific structure of urban spaces more easily. This study focuses on the spatial construction and current situation of Bagcilar, one of the most problematic urban areas of the city of Istanbul. This research has been conducted using high-resolution remote sensing data and positional information from companies. The findings of the study are based on four different processes in the city. The first interprets the development form of the urbanization process which starts with urban sprawl and develops into a "monstrous industrial city" (Guvenc, 1993). The second includes changes in housing presentation patterns over time and their mismatches. The third process focuses on the recent transformation and its consequences in various parts of the city, but especially in areas where large industrial enterprises are located. The final one questions the distribution pattern of the companies that have shut down and those that are operating in the city. All four cases show that a significant part of Bagcilar's current problems stem from spatial irregularities.