Abstract: The comparison of seismic parameters between regular RC frame with conventional columns and RC frame with irregular shaped columns placed only on the periphery of the frame. Static non linear analysis was used which is also known as push over analysis where the lateral loads are applied against the gravity loads. Another parameter being considered was the overall height of the RC structure. Push over analysis predicts the post elastic behaviour of the overall structure under consideration. Hinge formation and its stages helps to determine the performance level of the structure. Software adopted formodelling, analysis and interpretation of results was Finite Element Method based SAP 2000 software. Code adopted for push over analysis was ATC 40 which deals with seismic evaluation and retrofit of concrete buildings. Displacement controlled method of analysis was adopted. All the seismic parameters were compared at the performance point of the structure. Performance point is that point at which the demand and capacity curve intersects. Six sets of models were prepared where each set consisted of different horizontal plan geometry. First set with rectangular plan, second with L shaped plan, third with T shaped plan, fourth with I shaped plan, fifth with U shaped plan and last set with square plan. Further, each set consisted of two sub sets dealing with different overall height of the structure. First sub set with G+8 models for RC frame with rectangular columns and RC frame with irregular shaped columns placed on periphery of frame. Similarly, second sub set with G+16 models for RC frame with rectangular columns and RC frame with irregular shaped columns placed on periphery of frame. Results revealed that for all the sets of models with G+8 and G+16, RC frames with rectangular columns resists more lateral force than irregular shaped columns.Keywords - Irregular shaped column, reactangular column, static non linear analysis, finite element method, performance poi nt.