Secondary Spaces of Entrance, Corridor, and Balcony in Tehran Housing - A Comparative Analysis with Nagoya Residences

Abstract

Due to increasing costs and shrinkage of Tehran housing, interior layout plays a more critical role. In addition to the main spaces, such as the bathroom, kitchen, and bedroom, which are present and vital in each residential unit, we identified entrance, corridor, and balcony in our Tehran samples as secondary spaces. We aimed to investigate these spaces' role in Tehran's current housing; we analyzed their existence, size, and relationship with the unit's total area by considering the background and history of these spaces. Japan's experience in small housing convinced us to utilize under 100 m2 of Nagoya samples for comparison. Results revealed sufficient area for these three spaces in all Nagoya samples. In contrast, these spaces in a large percentage of Tehran samples did not exist or lacked efficiency contrary to related rules and regulations. There was a weak correlation between unit size and the lack of entrance and balcony, but corridor was usually removed in smaller units. We suggest separate entrance and corridor as essential spaces and not optional, regardless of unit size. Also, transparent, and visible balconies, especially in dense urban areas, are incompatible with the Iranian lifestyle and should be adjusted to cultural beliefs and norms.