Competence evaluation is the biggest challenge at present. In recent years the potential of the construction industry resides in the knowledge, skills and abilities of its specialists and many certification bodies of construction specialists have become interested in using Lean methodology in order to measure or monitor their services efficiency. The aim of this study is a practical demonstration of the Value Stream Mapping method or visualization and rationalization of the competence assessment process of construction specialists in order to develop possible solutions for the improvement of the certification process. Identification of the performance of the competence assessment process of construction specialists was made using Value Stream Mapping in order to visualize the activities creating value, as well as difficulties and challenges in each of the process stages of the competence assessment process in the construction field.