Traditional method of defining design and cost scope of project between the client and consultant requires repetitive updates and visualization. However, lack of proper visualization persists during this phase i.e. semi detailed engineering. This results in longer cost blackout periods and weaker cost control leading to less accurate budget scope. Mostly drawings and (sometimes) scaled models are used in getting feedback from client. With the emergence in the visualization technology, it is possible to get immersed in a full-scale interactive virtual environment and experience everything like it is happening in real. This technology has a potential to present things in "interactive-immersive-physics" enabled environment as a way to assist in cost and design appraisals happening between client and consultant. This paper aims at reviewing potential of "Immersive visualization" and summarizing the factors that can be controlled using the same in construction projects to improve cost engineering process during semi-detailed engineering phase. The study will provide knowledge base for implementing virtual reality into construction project scope definition. Review, potential best practices alongside inputs from field professionals and experts will be utilized to achieve the objectives of this study.