Urbanization presents a unique challenge of balancing tradition and modernity in architectural development. This project report embarks on a comprehensive exploration of the transformation of local house forms within the Rajshahi City Corporation Area (RCC). To achieve the objectives, a descriptive and comparative research design is adopted. The research findings contribute to a better understanding of the transformation of local house forms in Rajshahi. Exploring the old and modern built forms provides insights into the spatial and aesthetical changes that have occurred over time. By delving deeply into a manageable number of areas, the study aspires to provide valuable insights into transforming new and old house forms. The comparative analysis highlights the transformation in built form, materials, spatial quality, indoor and outdoor space, and construction methods. The study area plays a crucial role in understanding the intricate relationship between the built environment, architectural form generation, and spatial configuration in the period of the 1920s–1980s and 2010s–2020s. This process involves dissecting the physical layout of the area, identifying patterns, and synthesizing these findings to derive meaningful insights. Rajshahi has uniform characteristics in its spatial pattern of old and new build forms. The project report underscores the pivotal role of urban planners, architects, and policymakers in RCC's architectural evolution. RCC serves as a microcosm of the universal challenge of reconciling tradition and modernity, and through this exploration, it provides a blueprint for cities worldwide seeking to integrate their past into an inclusive, sustainable, and culturally vibrant urban future.