Capital projects are important for development and progress of the state. The project process takes years and with increasing demand their value grows. Due to the complexity and scope of implementation, capital projects must be managed by project managers. Their existence dates back to ancient history and today they are becoming one of the most needed occupations. With the development of technology the profession of a manager is also advancing. Project manager in addition to project management processes, must also master the skills of organization, project control and human resource management. By continuously upgrading the knowledge and experience of implementing various skills the scope of managers' work also increases. Communication is most important in the implementation of such investment projects. The efficiency of the realization of a particular phase within the project life cycle depends on the manager himself. In order to achieve results more easily and quickly, we divide the capital project business into an initial phase, an implementation phase and a final phase. Managing financial values, performing within a time frame and controlling individual activities is the obligation of the project manager. Successful implementation of all capital project activities and efficient planning and control by the project manager will lead to a successful project.