It is commonly observed that many RC Building collapses during an earthquake are those building which is non –engineered or those RC Buildings which are not constructed as per codal provisions. Some of such buildings have deficiencies in whole structure or individual structural members which don’t have the adequate lateral capacity to counter the seismic demand. Before retrofitting of structure it is required to perform necessary assessments and evaluations of structural member or location deficiencies are found. In this case study, a G+3 storey RC Building is considered for seismic analysis which is located in the zone –IV to calculate the additional seismic strength of structural members like beams and columns. Based on this analysis retrofitting measures are suggested. This analysis is performed by using Stad pro-V8i software. The recommendations are based on IS – 15988, IS – 1893, IS – 13920 and FEMA codes provisions. The method adopted for seismic retrofitting of structures is RC Jacketing.