In this research, an optimization of pile layout during the designing of an ecological breakwater on piles has been performed. Breakwaters are exposed to wind and wave loads, thus it’s necessary to determine the relevant forces needed for the sizing of the piles. Morisons equation was used for determination of the dynamic wind force, whereas the values of wind acting per m' of breakwater were determined through the solving of polygon force. Expressions for the calculation of pressure force on a vertical semi-submerged breakwater screen, for given significant wave heights were used for the determination of wave forces. The breakwater models were created with the usage of GEO5 software package. There, the entire structure was discredited into several segments, each consisting of four piles. Various model variations were analysed, including changes in pile axial spacing, sea depth, and pile diameter. A total of 27 models were made and th required reinforcement and compressive strength of the pilot were calculated for each model. Pile prices are based on the prices of concrete and reinforcement required for their construction, as suggested in the cost estimate. Variations in pile prices caused by changes in certain parameters are displayed in multiple charts.