Urban planning has always influenced and shaped social and economic organization of cities, it’s not politically neutral. This research is addressing the ongoing urban growth and transformation of Tehran through the last century and the relation between urban form and social transformation through the process of modernization and regionalization of this city. In this research we trace how every new plan with its socio-political intentions in every stage of urban growth realize new urban form and culture. Since the 1850s, successive historical interventions in Tehran have imposed morphological changes that amounted to entire new urban space and urban lifestyle. Our contribution will be limited to the political role of urban space, and the interrelation between every new form of governance and the way it’s represented in the space and influence urban life during the last century in Tehran.