Lift core is an important element for strengthening of structure in earthquake prone area (Mw=6.5 or more). This paper deals with use of lift cores to resist the seismic forces and its effect by changing the lift core location. The study for G+5 and G+10 type frame buildings are taken under consideration. These buildings are further subdivided as per soil strata i.e. hard, medium, and soft. Two locations of lift core considered for studies i.e. centre core and corner core. Zone V is considered for all buildings which will cause maximum base shear to the structure. Study is focused on comparative static and dynamic analysis which will show graphical representation of G+5 and G+10 building along with soil type. Economy is studied in analysis.