Multi-phase construction projects are the norm in commercial work, not the exception. A building that takes eighteen months to complete passes through design, permitting, site prep, foundation, structural, mechanical, and finish phases — each with its own trades, schedules, and handoffs. At Delta Building Systems, our project management process is built around phase-transition discipline. We define completion criteria for each phase before the next one starts, which eliminates the overlap problems that plague projects where phases blur into each other.