Abstract
This research focuses on defining and clarifying the property of similarity which characterizes the Traditional Houses Architecture, as previous related literature,which has dealt with this issue almost implicitly, is characterized with inadequate and unclear knowledge regarding this property in the plans of traditional housesin old Mosul city. The research aims at studying and elaborating the property of similarityand testing the principle hypothesis that the plans of traditional houses of old Mosul city may be characterized by certain patterns of similarity on both the level of the overall plan composition and the level of plan parts. The research achieved its goal via four stages; the first stage includes the deffinitions of similarity and its related aspects. In the second stage the related previous literature is reviewed in relation with the issue of similarity, while the third stage focuses on introducing elaborated theoretical framework of the research variables within various compositional levels. The fourth stage is dedicated to practical study procedures, presenting and discussing results and finally introducing the conclusions which support the hypothesis of the research and introduce a more detailed definition of the similarity patterns within the plans of traditional houses in old Mosul city in the light of the measured variables and the related recommendations.
