The organizations today need to apply proper IT governance for beneficial IT investments. This research focuses on how the organization structure should be done through the IT governance mechanisms application. A case study is done in a large Swedish constructing company using the ISO/IEC 38500:2008 IT governance standard. Several IT governance practices related to the ISO/IEC 38500:2008 standard were identified which were mostly related to “Responsibility”, “Strategy” and “Performance” compared to “Conformance” and “Acquisition” principals. The results reveal the importance of the way that the company has chosen to structure its organization around an IT project in their IT Governance mechanisms. This is closely linked to the principle of “Responsibility”. Practically the standard can be used in future IT projects and the practices found in this study can be beneficial for analyzing and achieving an effective IT Governance implementation.