In this paper, the results of theoretical analyses related to the evaluation of site effects in Tehran city, the capital of Iran, are presented. To evaluate the response of site, recorded bedrock motions in BHRC (Building and Housing Research Center) acceleration stations at Tehran city were used as bedrock input motion. These motions were recorded during Firozabad-Kojour (2004) earthquake (Ms=6.4), which occurred near Tehran city. Equivalent linear analysis was performed to evaluate the seismic response of each selected geotechnical and geophysical profile subjected to the scaled 475-year bedrock input motion. The results are presented in terms of site response spectrum and site amplification factor, computed in the period ranges 0.1- 0.5 and 0.1- 2.5 s. The estimated site response spectra were compared with the suggested one in Iranian Code (Standard No. 2800). This comparison reveals that there are acceptable trend between the estimated response spectra and Iranian Code. The values of amplification factor in ranges of period 0.1–0.5s and 0.1–2.5 s can also be considered in designing typical and generic buildings of the area
