Extended Abstract
Background and Objectives: The transition between the Qajar and early Pahlavi periods in Iran involved significant changes in political, economic, cultural, and social aspects. These changes affected every part of life in the country, including the city of Tabriz. One of the areas deeply influenced by these shifts was architecture, especially the design and layout of residential houses. Houses in Tabriz did not just serve as buildings for shelter; they became spaces that reflected the changing lifestyles and social norms of the people. Despite the importance of this transformation, few studies have closely examined how these social and political changes appeared in the physical form of houses. This research aims to explore how different social factors influenced the evolution of housing architecture in Tabriz during this transitional period. Due to Tabriz’s strategic location near Russia and the Ottoman Empire, and its political significance with the presence of the Crown Prince, the city was especially exposed to modern ideas and cultural interactions. By studying these influences, this research tries to explain how political and social developments affected the structure, space, and function of residential buildings in Tabriz. The primary research question is: How did the form, spatial organization, and function of houses in Tabriz change between the late Qajar and early Pahlavi periods, and what were the main causes behind these architectural transformations?

Methods: This study employs a qualitative research approach combining field observations and library-based documentary analysis. A total of 40 residential buildings dating from the Qajar and early Pahlavi periods, accessible for onsite visits and data collection, were selected as case studies. The research method is descriptive-interpretive, focusing on identifying spatial patterns, architectural elements, and functional changes within these homes. Data collection included visual surveys, photographic documentation, and archival research to gather information on the layout, structural modifications, and use of spaces within these houses. The analysis focused on understanding the progression of architectural transformations and linking them to historical social changes, thereby enabling a comprehensive understanding of the mutual interaction between society and residential architecture in Tabriz.

Findings: The findings reveal that architectural reforms and spatial modifications in Tabriz’s houses began gradually during the mid-Qajar period and intensified in the early Pahlavi era. Initially, these changes influenced the lifestyles of the residents, marking a shift from traditional living patterns. In the early Pahlavi period, significant spatial reorganization took place, where multi-functional spaces traditionally reflecting Iranian cultural and social customs were either removed or repurposed. For example, inner courtyards (Andaruni), transitional entrance spaces such as porches, corridors, and vestibules, as well as other characteristic features like pool rooms (Howzkhaneh), continuous verandas (Iwan), and alcoves (Kalleh’i), gradually disappeared or lost their original forms. Instead, these were replaced by simpler, mono-functional rooms designed primarily for living, sleeping, or resting. This transformation led to the removal of many traditional spaces and a simpler spatial form.

Conclusion: This research concludes that the spatial and architectural transformations observed in the houses of Tabriz during the late Qajar and early Pahlavi periods are direct reflections of the broader political, social, and cultural shifts of the era. The transformation from traditional, multi-functional houses to simpler, function-specific residential spaces mirrors the modernization process and changing lifestyles influenced by Iran’s interaction with neighboring powers and internal reforms. Tabriz’s unique geopolitical position accelerated these changes, making it a critical case study for understanding Iran’s architectural evolution during this period. Ultimately, this study demonstrates how architecture serves as a tangible record of social history, embodying the complex interplay between cultural identity, political change, and everyday life. These findings contribute valuable insights into the field of architectural history and urban studies in Iran, highlighting the importance of preserving and studying historical houses as living documents of societal transformation.