The middleware is the interface that connects them between the other two spaces and makes them accessible or visible. Indigenous houses in East Gilan are divided into four categories: plains, plains, foothills and mountains based on their location in the middle climates. The aim of this study is to explain the patterns for "Mianvar" in native houses of the plains and foothills of East Gilan. This explanation can show special patterns of spatial organization in these houses; And to clarify the role that mediators have played in establishing access and access relationships. The research hypothesis is that mediocrities have played a fundamental role in the spatial organization of indigenous houses. The type of research is interpretive-historical; Because it explores and explains the intermediate relationships of a number of houses in the past. In this regard, first of all, a number of native houses have been selected by purposive non-random sampling method and the spatial patterns and spatial organization of the middle ground in them have been identified with a qualitative and analytical approach; Then, with an analytical approach, similar features and their common patterns in the number of samples have been obtained and in the final step, the middle position in the optimal spatial organization patterns in these areas have been identified and explained. The results show that porches and stairs were the most widely used types of mezzanines in homes in these areas; In addition to having a special shape and physical features, the south porch has played an important role in the access and access between the rooms of the house and the hall with the outside space, while the north porch has not been observed in the samples.