The aim of this research is to develop construction planning and plan review processes within virtual environments that result in the consistent development of more innovative and higher quality construction plans. During the early stages of this research, we have shown that affordable immersive display systems can be constructed and effectively used to allow construction project teams to better visualize product and process information in a stereoscopic 3D environment. The Immersive Construction (ICon) Lab has been built at Penn State University as a test bed facility for 3D and 4D CAD model visualization. This paper presents an overview of three case study projects performed in the immersive display system with a focus on construction planning activities. Early results illustrate that a project team can identify innovative solutions to construction challenges when performing a plan review of 3D and 4D virtual prototypes in an immersive environment.