After the industrialization, intensive global migrations to city centres have been experienced. Extensive population growth and expansions have occurred in the city centres due to the effect of these migrations. New and more comfortable structures are preferred with the contributions of economic developments. Traditional structures left to the use of lower income groups in the first place due to this social change were completely abandoned in later periods. The objective of this study is to present a model proposal for the process of refunctionalization by restoration of traditional structures protected by legislations. Architectural design process is examined, the methods utilized in re-functionalization of existing structures are identified and a proposal model is created by also taking the preservation criteria into consideration. The models taking place in the literature and customized generally for new buildings, Post Occupancy Evaluation (POE) method intended for the measurement of user satisfaction in existing structures, legal limitations to be taken into consideration in the process of conservation of traditional structures and other limitations concerning the sustainability of structures are identified. The conservation process, taking place in the literature as Carte del restauro, in response to destruction of structures with historical and cultural value over time, is now carried out even more effectively also with the participation of governments. A building program model proposal consisting of ten stages is prepared in this article with the intention of contributing to the success rate of reutilization of traditional structures under protection.