As a construction project progresses often the owners come up with their preferences of project elements. This happens when they see or hear about latest products in the market, or coming across an attractive thing somewhere. Such preferential engineering should be considered and implemented during the conceptual design stage prior to detailed engineering and construction. Minimizing “preferential” changes will reduce the overall impact to the construction activities.
It is quite usual for a project to experience some change during construction, that is unexpected. Managing these changes is difficult without having to deal with avoidable, preferential changes. Spending additional time up front during the planning stage to consider all potential options and make a decision regarding any preferential items will prove beneficial later in the project. If such preferential changes are unavoidable, as the technology changes rapidly, then it would be quite useful to consider to allocate an additional sum for preferential engineering.