Purpose: The lack of digital competence in the industry of construction is a fact, which can obstruct the implementation of digital tools. The goal for the study is to chart the workers at the construction site’s digital competence through semi structured interviews with participants in an extension project, Alfa.  Method: The study was done through a case study with interviews as a primary source of data. The interviews are held at the construction site of the project alfa with an SME (small and medium-sized enterprise) as the general contractor.    Findings: The digital competence regarding the use of digital tools in building construction is, just as the experience to use them, low and several difficulties can be seen on the construction site. To be able to use the digital tools that is implemented on the construction site the construction workers need to have knowledge about for instance their own role and duties, how to navigate in the tools and what benefits that can come from the use of digital tools. Good communication between design and construction is important for the use of digital tools. More collaboration and greater understanding about the demands from construction can create an easier implementation and use of the digital tools in construction.  Implications: The digital skills of professional workers are generally low. Increased competence can be achieved through more training and information opportunities for professionals to take part in. Knowledge of the digital tools' structure and functions along with basic professional skills and computer experience contributes to a simplified use of digital tools. Through standards and guidelines for the use of digital tools in production, clearer strategies can be formed within companies and projects and result in simplified software development. By involving the contractors in the early planning stage, the demands and wishes of the professional workers can be lifted and simplify the use of the tools in the production.  Limitations: Due to the delimitations made, the study becomes narrower and more specific. The limitations make the study's results more concrete and can be used as guidelines and recommendations for future projects with similar conditions.  Keywords: construction, construction communication, obstacles, construction site workers, digital competence, building construction, digitalization