Collaboration of the construction team with the architect, engineer and the owner is preferred to be started on early stages of design phase. At that time, the Building Information Modeling shall immediately be implemented. If the architect is only providing 2D drawings, then the construction manager should convert the 2D drawings to 3D intelligent models. When the specialty contractors, especially the MEP contractors and the steel fabricators are involved, they need to spatially coordinate their work. The 3D coordination can be started right after the model is created to ensure that any same space interference (hard clash) or clearance clash (soft clash) conflicts are resolved. Overall, the coordination efforts of construction manager and specialty contractors in advance of construction help to reduce design errors tremendously and to better understand ahead of time the work to be done. For example, Research 2 Tower Project for Colorado Denver Health Science Center distinguished itself with the implementation of BIM in comparison to Research 1 Tower project which had major complex mechanical system problems. The BIM usage for Research Tower 2 included 3D MEP coordination