The relationship between criterion engineer and design build engineer is a critical link on a design build project. The role of owner’s advocate will shift from criterion engineer to design build engineer during the project’s timeline. This presentation will discuss how factors such as communication between the criterion engineer and design build engineer, the criterion engineer’s project involvement after bridging documents have been issued, liability and risk levels, relationships with the building’s owner, and changes in the building’s design influence the design build engineer’s decision making process.