Optimum cost, performance and quality are the main drivers in 
building construction. Methods that have been developed so far have 
not comprehensively addressed building sustainability outcomes. 
However, there has been increased awareness of the importance of 
value engineering (VE) and sustainable development within the 
construction industry. Both subjects play crucial roles in realizing 
quality, reliability and durability as well as enhancing performance 
throughout the life cycle of a project. They also help to improve 
service related outcomes within budget constraints, achieve a more 
efficient use of resources, and accomplish an optimum combination of 
whole-life cost and quality to satisfy the owner and user requirements.