The construction industry, as a industry of many influence in national business cycle, is changing into multiplicity, distinction and sophisticated system. It is demanded that construction instruction industry is changed to an aggressive and active development type from an order dependence type through the real estate policy on August 31 2005 and real estimate speculation regulation policy etc. The building construction has a process from planning to maintenance by designers, builders and developers. Therefore owners are trying to gain expense effect for a process of the public building construction. The business and sales facility construction is consist of the passive order system in response to owner’s requests. As a result, it has incurred a great loss in development due to instinctive decision and a limited sense in economic side. This study is aimed at a process modelling to decide whether it is development of building through a process model included location, market analysis and feasibility study in the planning phase.