One of the most common reasons for Occupiers to move. In particular, privately owned companies as they either try to lower costs or trade their older infill building for a new one in greenfield development.  As Occupiers grow, a regional strategy replaces a local one. This example is my most familiar when a centrally based local company moves to the Inland Empire or even out of state. The same dynamics occur in many other major industrial markets. The high cost of infill buildings  allows occupiers to make this trade and earn a profit.