Considering vicinity as a mere prerequisite but not an ample cause needed for creation of a relationship, the paper investigates the interfering factors playing a significant role in social life of residential complexes habitats.Data for survey were collected through dividing the residential complexes in two groups of homogeneous and heterogeneous. In this way, we selected four residential complex in Esfahan, using a site-based questionnaire originated from the literature reviewed. As a result, social interaction among residents was measured and significant factors influencing this quality were studied and evaluated. Before which an open interview was conducted with residents and scholars in order to specify the hypothesis of the survey.The results of this study led to the following conclusions. Existence of a base for triple activities supports and facilitates social interaction among residents the most. Prompting a sense of place attachment, privacy and safety consequently correlate with social interaction as an independent factor. After all, social homogeneity has been recognized an influential ground factor. تفاصيل المقالة