We have a project that is about 125,000 sf and are working with a consultant that is developing the OPR with the client and also writing the BOD for the project. The client is considering enhanced commissioning for this project.

My question is whether this same consultant can do the fundamental commissioning as well as the enhanced commissioning? We always thought that the enhanced commissioner has to be an independent 3rd party but the consultant insists that they've served as both the fundamental and enhanced commissioner for a single project with no problems. Is hiring one consultant to do both our fundamental AND enhanced commissioning permitted and/or wise?