The collision between two adjacent buildings under seismic excitation may occur due to insufficient separation distance between them. Such collisions, known as seismic pounding, may induce more destruction as nearby buildings have out-of-phase vibration characteristics. A numerical simulation and FE analysis are developed to estimate the influence of potential level of pounding on the seismic response demands of adjacent collided buildings. The seismic response demands of 12-story building are studied due to colliding with different levels of adjacent 3-, 6-, and 9-stories buildings and compared with a nominal model without pounding considerations. According to the herein outcomes, the pounding causes further loads which lead to additional shear forces and acceleration at different story levels that do not appear in the no-pounding case. The vertical location of potential collision extensively influences the distribution of story peak responses through the building height. It is observed that the stiffer building has undergone the most story drift and shear force responses magnification. The acceleration response of the high-rise building at the height levels below the impact levels is significantly amplified, while the response of the floors at the height levels above the impact level is slightly affected. Besides, the maximum responses in the low-rise building are significantly increased in the rebound directions over the whole height of the building, while the response in the impact direction is slightly affected.