Urban historic areas are threatened by a multifaceted problem of physical, social, functional, and economic degradation. Moreover, changing hands of urban historic areas often results in the loss of interest to protect the historic sites. As a result, the accumulated memories between the owners and the spatial structure begin to disappear. In this sense, the ownership of historic buildings becomes important. To illustrate this, an Anatolian town with historic sites, Tokat, was selected. In this paper land property-led urban conservation (LPLUC) was improved with the buffer zones method (BZM). Information technology was used in order to create the buffer zones. BZM helps to calculate covered areas and their quality, and also to compute the quality of buildings with their covered areas, which are tabulated in each buffer zone. The buffer zones were created with GIS and the data of the urban historic sites were computed with GIS. This paper emphasizes, in the context of urban conservation land, the property-led conservation approach, the importance of using GIS in urban conservation processes and the impact of BZM in relation to the historic sites and the conservation plan of Tokat.

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With the world population becoming predominantly urban at the beginning of the twenty-first century, various interests and needs of society demand the planning and execution of public policies that go beyond the established political-administrative limits, imposing the need for institutional channels that can make the proper reading from the physical-territorial reality. The metropolitan planning institutes are essential agents in this process for an adequate analysis of the territory, which will establish the parameters for the discussions and deliberations of the society involved. In Brazil, many institutions still need to be consolidated, and the absence of metropolitan planning institutes in various parts of the country contributes to the absence of proposals and referral of projects to meet the diverse needs of the population on the scale of metropolitan regions. In this sense, the study intends to identify several aspects in which the metropolitan planning becomes essential for the adequate ordering of the territory.

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