Design-Build Process OR Single Source Responsibility:
Early knowledge of Firm Costs: Construction costs are known far earlier than in other deliever systems. The entity responsible for design in simultaneously estimating construction costs and can accurately conceptualize the complete project. Stagged contracting for design/build services affords the client on or more “go, no-go” decision points during design. The decision to proceed with the project is made before substantial design expenditure and with firm knowledge of final costs.
One source of responsibility: With both design and construction in the hands of a single entity, there is a single point of responsibility for quality, cost and schedule adherence. The design-builder is motivated to deliever a successful project by fulfilling multiple parallel objectives including aesthetics and functional quality, budget, and schedule for timely completion. With design-build, the client is able to focus on scope/needs defintion and timely decision-making, rather than coordination between designer and builder.
The project is people and relationship driven versus document driven. There is a team approach from the design through the construction process.
Cost Savings: can be achieved through the evaluation of the materials and methods that may be used and which may be more efficient and accurate.
Time Savings: because the bidding periods and redesign are eliminated and the construction and design are over-lapped, total design and construction time can be significantly reduces.
Quality Control and Improved Risk Management: Performance aspects of cost, schedule, and quality are clearly defined and responsiblities/risks are appropriately balanced. Change orders due to “error and omissions” are virtually eliminated, because the design/builder has responsibility for developing drawings and specifications as well as constructing a fully-functioning project.