||"Construction is a multi-organisation and interactive process. Successful completion of a project therefore depends on the accuracy, effectiveness and timing of communication and exchange of information and data between the supply chain. Unfortunately, the inefficiency of the existing method of communication has become a barrier to several innovative construction processes developed for the industry over the past four decades. Thus, research efforts and direction have since changed. Several studies now focusing on integration of the construction process with communication and standardisation of data exchange, taking advantage of evolving computer technologies. The capability of these technologies, object-oriented technology and the Internet has made a significant impact on other economic sector such as finance, manufacturing, insurance, etc., with significant improvement in performance and productivity. Thus the technology is available but the challenge is utilising the technology to develop method of improving the construction process. To ensure efficient utilisation of IT as enabling tools, formalisation and understanding of the construction processes are required. This will enable the identification of the problems and opportunities of the strategy, and its implementation and performance in practice. The paper presents a detailed model of pre-construction and construction planning processes, based on an on-going research project, that form the basis of the developed planning system. The detailed process mapping methodology using CASE tools and the associated integration of IT tools, as an enabler to aid and improve the planning process, are described. The system provides an interface for integration of CAD data, using IFC objects, within the system. The application of the system offers a promise of significant improvement in both pre-construction and construction processes."