This document presents a comparative study of the seismic analysis of ground storey and parking storey reinforced concrete frame buildings. Two models are analyzed: a 4-story building with the ground floor at a depth of 1.5m and a 4-story building with the first floor (parking storey) at a depth of 3.5m. The parking storey building is found to have increased natural period, base shear, top displacement, and internal forces in beams and columns compared to the ground storey building, making it more vulnerable to earthquake loads. Parameters like natural period, base shear, displacements, and internal forces are higher for the deeper parking storey building compared to the ground storey or shallow parking storey