What type of contract requires the contractor to be responsible for both the engineering and construction of a project?

The design-build contract is a distinct project delivery system where a single entity is responsible for both the design and construction phases of a project. This integrative approach streamlines communication and collaboration between the engineers and construction teams, which can lead to more efficient project execution and reduced timelines. The contractor, having both design and construction responsibilities, can address various aspects of the project cohesively, ensuring that the design considers practical construction methods and materials from the outset.

In contrast, traditional contracts typically separate the design and construction responsibilities, often leading to a more fragmented process. Turnkey contracts, while they may also encompass both design and construction, emphasize delivering a complete project that is ready for operation, making them slightly different in scope. Concession contracts involve providing a project that may be operated by an outside entity under specific conditions, which further distinguishes them from the design-build approach. This combination of responsibilities in design-build agreements allows for enhanced accountability and innovation during the project lifecycle.