This study provides a micro-level analysis of the changes in Cheongnyong-dong, aiming to identify the interactions between function and form within the historical flow of urban architecture. Focusing on the characteristics of urban architecture in Cheongnyong-dong, this research particularly examines the transformations in layout and façade from the 1970s to the 1990s. By analyzing materials and windows of both the front and rear façades, as well as the differences between the first and upper floors, the study sheds light on the evolving patterns of urban architecture. From the 1970s to the 1990s, residential buildings accelerated changes in urban architecture by reinforcing unity in materials and creating more volumetric façades. In contrast, neighborhood facilities and mixed-use buildings displayed a clearer distinction between commercial and residential functions, with pronounced differences in material usage between the first and upper floors, as well as between the front and rear façades. This implies that while residential buildings change based on plots, commercial and mixed-use buildings transform according to their functions, resulting in varying speeds of physical change.

The object of this thesis is to study the Urban Hanoks around Cheongryangri district. Cheongryangri district became one of Seoul’s administrative districts due to the expansion of the urban area. It is located on the east side of Dongdaemun, the development was to deal with the lack of residential houses in the city. This research was to specify the stylistic characteristics of Urban Hanok in Cheongryangri area by analyzing the changes in residential Urban Hanok for to the influence the market. First, Cheongnyangni Urban Hanok shows the changes in the configuration of plan in accordance with change of the purpose and the way household are divided. Second, as the function of Urban Hanok changed there has been changes in cross-section area. Third, Urban Hanoks with different function have different location. Fourth, the functional change in shops does not cause the change in the plan.