The aim of the study is; To determine the most appropriate approach by analyzing alternative approaches in reaching the most effective and economical decision by analyzing the types and levels of damage and cost factors in the repair / demolition decision process of the reinforced concrete houses affected and damaged by earthquakes. In the study, 270 reinforced concrete houses affected by the 2011 Van earthquake were examined and types of damage; Damage levels such as cracks, crushes, spills, separations and collapses seen in bearing and non-bearing elements are classified as undamaged, low, medium, severely damaged and collapsed. In the method of repair type and cost, structural damages, repair and reinforcement, emergency housing costs, and humanitarian losses such as injury and death are discussed. In terms of demolition types and costs, construction site installation, labor, equipment, transportation and liquidation cost analysis were chosen as methods according to the dismantling technique. Comparative analysis of the alternatives determined according to the strengthening methods at the decision stage was made in terms of internal rate of return, profitability index and payback periods. In the study, four alternatives were determined: reconstruction, leaving the structure as it is, ground floor strengthening and whole floor reinforcement, and ground floor reinforcement was the most suitable option in terms of all comparison parameters. The evaluation of the stand-alone decision-making process frequently encountered in strengthening practice in Turkey and 40% cost ratio would be far from realistic results when used as a fixed rate has been determined.