Enhanced communication
Because the design parameters of a project are being developed along with the budgetary goals construction methodologies and budget conditions being weighed simutaneously, a project is more likely to be realized than with pure design approach. The owner has greater access to the "team" working on project developement as the project is being developed. This efficiency is not a negative "short cut" as a rule, but rather the keystone to the success of the Design&Build model.

Accountability
Rather than a parcelized level of responsibility of the classic design-bid-build, design-build provides an integrated solution for the owner or client. This moves projects away from the "finger-pointing" that is often commonplace in contemporary construction projects, and allows the owner to look to one entity with any questions or concerns.

Single Source
Instead of having several contractors and consultants, an owner has just one entity to deal with. Design revisions, project feedback, budgeting, permitting, construction issues, change orders, and billing can all be routed through the design-build firm. This single point of contact allows a certain degree of flexibility for the owner. Most design-builders will leverage that flexibility for the owner's benefit by continually refining the construction program to maximize the owner's value at the completion of the project.

Value-based project feedback
Typically, in order for a contractor to bid on a project, very specific details relating to the methods and materials must be given to avoid any ambiguity and to make an "apples to apples" comparison of bids. In a design-build context, the owner, the owner's other consultants, and the design-builder can work together to determine what methods and materials will maximize the owner's value. In instances where marginally more expensive materials, designs, or construction methods might yield a higher return on investment for the owner than those of lower cost, the owner is free to adjust the project's program without having to re-bid the entire project.

Almost 70% of traditional contracts end up over budget, compared to D&B which is only around 25-30% over budget. The overage of a D&B project is generally owner driven whereas the overage in the more traditional method tends to be a result of the budget disconnect to which many architects and other design professionals are prone.