This study contains four models of RC Building of regular, mass irregular, stiffness irregular and soft storey. The peak responses of irregular building models are compared with Peak responses of regular building model. This building model contains ten stories modeled as shear type lumped mass system with single degrees of freedom at each floor level. The governing equation of motion is solved using Numark's method and is solved using coding in MATLAB software. From numerical results it is stated that peak responses of soft storey model gives better control over structural responses under various earthquakes except in some models.