Retrofitting of structural elements to enhance the performance of the building against seismic vibration is a matter of great importance and interest to structural engineers. Investigation on seismic retrofit based on comprehensive three-dimensional finite element modeling is not, however, quite noticeable. This study explores the suitable retrofit technique for building structures having three-dimensional finite element modeling. In this context, a typical ten-story reinforced concrete (RC) building structure is considered for seismic upgradation. The building is assumed to have been constructed without considering the guidelines of IS 1893:2016, Part-1, and to be capable of resisting the earthquake intensities of seismic zone IV. However, the building is in demand to be capable of withstanding the seismic zone V earthquakes. Consequently, the building’s seismic performance is assessed and reasonably retrofitted with steel jacketing to enhance its seismic performance from seismic zone IV to zone V. In view of detailed structural modeling, the shear wall and a dog-legged staircase have been incorporated in the structural modeling using a frame element with wider cross-sections. It facilitates a significantly faster computation in comparison with alternative modeling approaches, especially when considering shell elements. SAP2000 software is used to perform the pushover analysis (as per the ATC-40 capacity spectrum). Pushover results verify the applicability of the applied retrofitting technique and ensure that all the structural components of the building are below the collapse prevention (CP) structural performance level considered up to the performance point.