The Dominican Republic is a country with high seismicity that has been affected by earthquake for years. It has been highly vulnerable to earthquakes because of population growth, changes in demography and economic patterns, and other changes in social dynamics. These factors have led to uncontrolled settlements in disaster-prone areas, and the most devastated area is the northern coast because the area has more active faults than other areas. Since most of the existing structures in the country do not comply with the seismic standards or they were designed before the first seismic code, the seismic evaluation and the building rehabilitation of reinforced concrete are important. Therefore the seismic assessment is a way to reduce the risks in case of earthquakes.