Enterprises are so good, how good their managers, and those are as good as they can effectively lead and manage people. In the world is probably not a entrepreneurial entity that would not want to have employed the most capable employees, hence managers. Path to a company's success is much easier. Low percentage of firms is not able to adequately describe the necessary competencies of managers on the need and requirements of business practice with regard to the quality and quantity of their work. This paper analyzes the possibilities of the use of personality questionnaires HPI and the MBTI to identify the competencies of project managers of construction projects. The qualitative survey was carried out among 51 construction companies in the Czech and Slovak republics. Acquired competencies of project managers of construction firms processed and published in the form of case studies were compared with the competence of the project manager according to the National System of occupation. The results of the survey highlighted the fact that the HPI and MBTI are appropriate tools to identify the competencies of project managers. This condition has great importance because the manager's personality can greatly influence unlike others, where the findings of their personality it is not manipulated in any way. The manager can react to the personality type knowledge of the others and influence them indirectly by their own attitude, behaviour and cognition. To finding out of this state serves psycho diagnostic with the use of personality tests.