In a Design/Build (D/B) project, the contractor and architect form a single entity to deliver a complete project based on a conceptual plan provided by the District. This method allows for greater control over the schedule, quality of work, and the efficiency of the project as conflicts between design and construction are significantly reduced. Under a Design/Build delivery, the contracts are retained by the contractor and not the District. Lean Construction principles, a production management-based approach to project delivery where work is structured throughout the process to maximize value and reduce waste, are integrated into all projects. Efforts to manage and improve performance are aimed at improving the total project, challenging historic beliefs that there must always be a trade between time, cost, and quality.