Analysis of the relationship and impact of govern - ment policies on urban planning and urban ap - pearance of Tehran houses during the transition

Contemporary Iranian architecture and its Vicissitudes has always been discussed from different perspectives. Among different architecture style, transit or transfer period, has al ways been questioned due to sudden changes in architectur al design. Considering to the fact that many factors affect the design of architecture, in this article, tried to examine the relationship between the three factors of “governmen tal politics or rules”, “urban planning” and “architecture, especially urban facade”. The transit period is a historical period with a fluid and non-quantitative nature in the late Qajar and early Pahlavi period. It is also more difficult for a variety of reasons, including the power shift of kingdom and the lack of resources attributed to this period. Therefore, in order to present a comprehensive and inclusive research for each feature, the three periods of the late Qajar, transit and the first Pahlavi have been studied and the evolution of events and developments has been presented comprehen sively. The research method is using a combined strategy of two interpretive-historical methods in the position of the main method and case study in the position of the comple mentary method. It is the city of Tehran, which centrality capital in all three periods has been considered as the area of this study. The focus of this research is on the urban fa cade of residential houses. An urban facade is the architec ture façade view that can be seen from the urban space or the street and alley. Analyses and Interpretation of the ur ban facade evolution and reading its relationship with urban planning and governmental politics has been identified as the purpose of this study, which indicates the existence of a significant relationship between these factors.