Today several activities of a construction project can be supported with information technology tools. However, there have been many cases of technology adoption failure. Lack of understanding about the process of technology adoption is often pointed out as the reason. This paper is based on a study to explore BIM technology adoption process and attempt to model and evaluate the process using system dynamics. The paper has its base on literature survey and five month field studies of three construction projects where BIM was being introduced. Insights from literature survey and case studies were used to develop a core system dynamics model of technology adoption. To this core, project and technology specific data was added to develop a preliminary system dynamics model. The research indicates that system dynamics is a promising approach in improving our understanding of technology adoption in construction projects.