Housing is the initial nucleus for the emergence of cities, and housing projects can be considered as an important factor of social stability, and the governmental housing projects in Egypt suffer from low occupancy rates, this is nothing but a true translation of the waste of huge national investments and confirms that these projects suffer from many design deficiencies. The research aims mainly to diagnosing and treating the design deficiencies in governmental housing projects in Egypt. To achieve this, the research was divided into three main parts. It begins with a theoretical study in which the research identified the criterias and basics of design flexibility in Islamic architecture besides drawing a theoretical background on housing design in contemporary governmental housing projects in Egypt, then, the analytical study of design deficiencies in governmental housing projects in Egypt, through which the research was able to formulate a methodology of treating design deficiencies in governmental housing projects in Egypt then the research moves to the applied study, in which the suggested methodology was applied on one of the privet housing projects in new Minia city, this leads the research to reaches its main result, which is that the interaction with the heritage of Islamic architecture is a deep source of inspiration in treating the problems of housing projects through the creation of modern architecture that keeps pace with the present and the future and is not neglected or independent from its ancient past, taking into account our special social nature.