<p>In this study, the seismic performance of buildings of different heights under the same soil and earthquake excitation conditions was investigated. For the dynamic analyses, acceleration records from the 6 February 2023 Kahramanmaraş-Pazarcık earthquake and building models with 4, 7, and 10-storeys were utilized. The analyses considered the elastoplastic behaviour of reinforced concrete buildings and the hysteretic response of soil. Site response analysis demonstrated that the highest spectral accelerations observed at the bedrock occurred within an approximately 0.2 s period, but those at the surface extended to a period of approximately 1&#xa0;s. Comparisons revealed that the response of the 4-storey building exhibited the largest spectral amplitudes. This building type has a natural period that is close to the dominant period of the soil. On the other hand, a comparison of seismic performance revealed that the structural demand of the 7-storey building was the highest. The normalized maximum foundation rocking angle in the 7-storey building (0.23°) was 15–20% greater than those in the other buildings (0.20° and 0.19° for the 10- and 4-storey buildings, respectively). Similarly, the base shear demand in the 7-storey building (505 kN) was calculated to be 20–51% greater than those of the other buildings (420 kN and 334 kN for the 10- and 4-storey buildings, respectively). Consequently, the 7-storey building exhibited a maximum interstorey drift ratio of 1.71% approaching to upper limit of seismic code. These findings emphasize that simply avoiding the resonance period between the soil and superstructure is not sufficient to achieve safe seismic design. Additionally, seismic responses in mid-rise buildings constructed on soft soil overlying stiff bedrock could be higher.</p>