What is "design-bid-build"

Design–bid–build (or design/bid/build, and abbreviated D–B–B or D/B/B accordingly), also known as Design–tender (or "design/tender") traditional method or hardbid, is a project delivery method in which the agency or owner contracts with separate entities for the design and construction of a project.

Design–bid–build is the traditional method for project delivery and differs in several substantial aspects from design–build.

There are three main sequential phases to the design–bid–build delivery method:

• The design phase
• The bidding (or tender) phase
• The construction phase