Conceptual estimating is an important stage of a construction project cycle, it assists owners and designers in their decision to accept or reject a project prior to committing funds. This paper presents and discusses a proposed framework for a Computer Integrated Virtual 3D Model for Conceptual Cost Estimation. The model integrates 3D-CAD drawings with relational databases in a Virtual Reality Environment to animate building projects on the web environment. The modularity of the model allows a dynamic link between relational database and 3D-CAD drawing so that a new conceptual estimate is automatically generated any time the drawing design is modified. Moreover, the preceding drawing once rendered will be viewed and animated on the web using Virtual Reality Browser. Doing so, owners, cost engineers and estimators will be provided with a tool that automates the preparation of conceptual cost estimate.