The traditional and most widely used method to structure the planning, management and construction of both privately-owned and public infrastructure projects in the US. In a DBB structure, the owner contracts separately with one or more:

The phases are customarily performed sequentially and the design is completed prior to being sent out for bid by the contractor or contractors that will be selected to perform the construction.

For more information on the DBB structure and other commonly used project delivery structures for public projects, see Practice Notes, Public Private Partnerships: Issues and Considerations and Negotiating Concession Agreements for Public Infrastructure Projects.

For more information on the DBB structure, including widely used variations, and other commonly used project delivery systems for privately-owned projects, see Practice Notes: