Information Technology (IT) is an essential catalyst for effecting improvements in the construction industry. Despite the growth and acceptance of IT in the industry, construction remains slow to adapt the capacity of change proffered by Building Information Modelling (BIM) System as well as exploit the diverse range of opportunities this IT innovation promises. This study explores the trends, applications and opportunities of BIM in construction in the 21st century with projections to 2020. The implications of these opportunities are also reviewed and possible constraints and challenges are identified. Finally areas for further research are explored.