The crucial role of a Project Management Office (PMO) in the construction engineering field is essential for ensuring project success. This research paper examines the conceptualization of PMOs for engineering and construction enterprises, underscoring the necessity for specialized structures to oversee projects in a coordinated and centralized manner. The study explores various PMO models and functions proposed by different authors, addressing the challenge of determining specific functions for implementation in a given context. It aims to propose a set of functions for a supportive PMO in an engineering and construction company, including the development and implementation of a PM methodology, provision of tools for project management support, and enhancement of PM competencies. Furthermore, the paper discusses the different types and roles of PMOs, emphasizing their evolutionary nature and operation at multiple organizational levels based on maturity. It emphasizes the substantial impact a PMO can have on an organization and the critical need for broad support for its operations across the organization, not limited to management levels.In addition, the study offers a comprehensive guide to PMOs, defining the project management office and its various types, encompassing project, program, and portfolio management offices. It delineates the roles and responsibilities of a PMO, stressing the importance of standardizing and enforcing project management standards across an organization. Overall, the research aims to illuminate the value that PMOs bring to an organization, particularly in the context of engineering and construction enterprises, and to provide insights into the significance of a value-centric PMO, its primary roles and responsibilities, and its contribution to successful project outcomes.