The national and international studies for the conservation of the city are carried out in Turkey has many cities with rich historical and cultural values. Especially after 1950 with the increase in the destruction of historical city textures as a result of the rapid population growth and unplanned urbanization, the conservation of immovable antiquities has come to the fore and various legal regulations have been made. Conservation efforts continue today, and rehabilitation practices are continued in historical regions. It is of great importance to carry out conservation activities within the framework of sustainability in the historical cities, which contain the traces of various civilizations. Sivrihisar city, which has a deep-rooted history and preserved its traditional texture, was chosen as the study area. The method of the study consists of 5 stages as determination of the problem, literature review, on-site observation and examination, evaluation, results and recommendations. Although Sivrihisar lost its importance in the past, today it has started to gain value again with its tourism potential. Planning studies have the quality to ensure theconservation of Sivrihisar historical city texture. Restoration, facade renovation and street improvement works have gained speed in Sivrihisar recently. These are important studies for the future of Sivrihisar. However, it is clear that uncontrolled tourism will have negative effects on the historical urban texture. The problem of the study is the presence of buildings in the historical city center that need conservation and not to be conserved against tourism. In this context, evaluating the planning studies by considering the old and new urban texture and proposing solutions to the problems constitute the aim of the study. The carrying capacity of Sivrihisar should be taken into consideration in order not to be adversely affected by the excessive tourist density. Tourism in Sivrihisar should be handled within the framework of sustainability principles. By applying policies such as conservation, rehabilitation and renewal, the continuity of the worn out historical texture should be ensured.