This study aims to investigate the problems related to natural stones used in the field of landscape architecture in public tenders and to make suggestions for possible improvements. Within the scope of the research, the works carried out with the open tender method within the borders of the central district of Elazig province were discussed. A total of 2620 unit prices and 1798 work item analyses were examined within the scope of the construction works, which were implemented by the criteria determined between 2010 and 2022. With the field studies, the current state of the coating material used was determined and compared with the first state in the visual documents obtained. The location, preferences, and orientations of the technical personnel were investigated in the selection of the coating materials used by the survey method. In addition, the strengths and weaknesses of natural and artificial coating materials were analyzed as a result of the research, and the benefits of using natural stone were examined. As a result of the studies, the problems and solution suggestions arising from the wrong selection of coating materials are included. It has been concluded that the unit prices of natural stones can be obtained from the work item by formula and analysis method and that they have many advantages over artificial materials.