The major ann of this research is to bring up the magnitude of natural hazard risks in Izmir built-up zone and its, not being taken into consideration adequately. Because the dimensions of the peril not taken seriously enough, the natural hazard risks, which are commonly well known, are not considered important or they are being forgotten after some time passes. Within this research, the magnitude of natural hazard risks for Izmir is being presented in the scope of concrete and local researches over Izmir risky areas.In addition to the thesis's anns, the ongomg laws, regulations, applications and institutions about the concept of natural hazards in Turkey would be criticized in detail. Furthermore updated suggestions would be given upon the basis of existing approaches in the field of politics and planning.Since the concept of natural hazards has an impossible to fully cover perspective considering the measures of pre- disaster and post- disaster, the physical attribute of the buildings influencing the residential precautions cannot be studied. However this thesis would be used as a reference for the future researches in uncovered parts of the topic.