Who is responsible for reviewing project drawings, specs and calculations BEFORE submitting them to the builder: the QAD, the Green Rater or a LEED for Homes Consultant?

Our experience outside the US is that a project will not meet ASHRAE and LEED standards unless a LEED Consultant or CxA performs a design review.

Since the Green Rater Manual says that the Green Rater cannot be involved in ANY architectural or HVAC design, I am wondering if this might be interpreted as COI.