The impact of the earthquake risk parameters on gis-based real estate valuation

Real estates (house-land) as accommodation and investment tools preserve their importance and priority in human lives. Moreover, from an administrative point, objective (unbiased) valuation of real estates is of utmost importance for taxation, expropriation, and privatization operations. Location of the real estate and social, environmental, and individual data of its location as well as specific data of the real estate play an important role in the valuation process and directly affect the result. In this research, an analysis of real estate valuation was performed based on Istanbul's district limits and by using the related modules in ArcGIS environment. In the second part of the research, by taking into consideration the earthquakes that are % 62 likely to take place up until 2030 and risk parameters concerning these earthquakes, an assessment has been made so as to determine how the risk parameters affect properties.