The structural design and analysis of buildings are crucial in ensuring their safety during earthquakes, particularly in areas with significant seismic activity. Shear wall structural systems are commonly used as lateral load-resisting solutions for buildings located in areas with strong seismic activity. The objective of this research work is to examine the dynamic behavior of both regular and irregular buildings in high seismic areas by employing shear walls, employing the response spectrum method. The study involves running numerical models to assess the structural response of both regular and irregular buildings, with and without shear walls, under seismic stresses. The findings demonstrate that incorporating shear walls into buildings significantly enhances their dynamic performance when subjected to seismic loads, particularly in the case of irregular structures. The research emphasizes the need of using shear walls in the design and analysis of buildings located in regions with high seismic activity. The study emphasizes the significance of structural design and building rules in guaranteeing safety in the wake of earthquakes. The study investigates the response of both regular and irregular structures under seismic forces using numerical simulations and analyses in current study, three G + 10 building models, each with a distinct plan: Symmetrical, C-shaped, and L-shaped are used. The comparative study of the behavior of both models with and without shear wall is then done. Calculations for story shear, base shear, model time period, frequency, and story drift are performed.