The aim of this project is figure out the most appropriate foundation type for Multistory Building and make a comparison between increasing number of floors with foundation cost. The main challenge in this project is to consider seismic loads according to expected earthquake that may occur in Palestine. The foundation system under consideration are isolated, continuous, mat or piles.The project will consist of several sections as follows: ❖ Important requirements that the foundation system should meet .❖ Types of foundation system❖ Study of the expected earthquake in Palestine❖ Review of site investigation report and then summarizes soil properties for a specific site of foundation soil❖ Find response spectrum by PROSHAKE Software❖ Design foundation system❖ Calculate foundation cost in different case