Describe the Design-Bid-Build (DBB) method.

• A. The consultant designs the roof system, the contractor bids the work, and then builds what was designed.
• B. The roof is designed by the client and built by a third party.
• C. The contractor designs and the consultant bids.
• D. The roof is designed and built by the CMAR.

Answer: (A)

In the design-bid-build approach, the project unfolds in three distinct steps: a design professional completes the roof system design and construction documents, the work is then put out to competitive bids from contractors based on those documents, and finally the chosen contractor builds the roof in exact accordance with the design and contract documents. This sequence—design first, bid second, build third—defines the method, with separate designers and builders and the price determined through formal bidding before construction begins. The other described setups mix design and construction responsibilities or involve a construction manager in a different role, which is why they’re not the same procurement approach as design-bid-build.