The Evolution process indoor and semi-open space and outdoor(yard) in the historic house in the Qajar and the first Pahlavi periods

Architecture and urbanism of Iran and consequently, the house architecture in the Qajar and the first Pahlavi periods has changed greatly. Gorgan city's architecture, like other places in Iran, has received different developments which has made structure of historic houses of the Qajar and the first Pahlavi different from each other. These developments at the physical field have led to changes in three fields of houses: indoors, semi-open spaces (balcony), and outdoors (yard). These changes have their roots in different factors like alteration in habitation style, conversion of multi-family living into single-family one, novel building materials, westernization, conversion of traditional introverted housing into foreign extroverted one, or generally speaking change in life style. This research tries to study process of changes in indoor and outdoor spaces of Gorgan's native houses from the Qajar to the first Pahlavi period. Thus using descriptive-analytic research method, test of the means at spss software was used to prove that changes of the means of spatial dimensions of data is significant with an error of 0.05 (Pvalue