Over time, geometric and cultural factors have led to the creation of spaces in a different structure. The spatial organization analysis can reveal the structural structure of the building in a different timeframe. These organizations are directly affected by the geometric features, the external and internal features, as well as the visual and objective structure of the building. Other scholars have studied the formation of the building based on the spatial organization of inter-house houses, palaces and other buildings. This paper examines the new spatial organization approach on the geometry of the extraterritorial and semi-extraterrestrial planes of the beginning of the contemporary era of Isfahan. The research method is qualitative with purposeful application and its data is collected by library and field method. This essay aims to analyze the impact of the geometry of the housing plan on spatial organization. In this study, first, the structure of the out-of-date plan of the beginning of the present century, the physical structure of space and spatial relationships, and then analyzed its existence or its absence on the study samples. Surveys conducted revealing the geometric properties of houses in this period have led to the same organization in the field of outsourcing and semi-outsourcing residential plans.