Effective project management in building construction always related to three major items that is time implication, cost implication and quality of the building construction. This book identified four most important causes to the ineffectiveness of project management in building construction which are design error, construction error, client change requirement and other factor which are mostly related to authority change requirement and no risk management implication. To achieve an effective project management in building construction , for primary stage, there are four main reasons need to be solved and PDCA ( Plan-Do-Check-Act) method have been proposed to help solve three major process of building construction that is pre-construction period, construction period and post-construction period.