The Draw Admin Fee is an estimated value when the loan is being underwritten to cover costs tied to draws (Inspection Fees, Wire Fee, Date Down Fees, etc.). The Draw Admin Fee does not hit the Loan Balance, only the actual costs tied to draws hit the Loan Balance.
Because the Draw Admin Fee does not hit the Loan Balance, there is no refund at payoff for unused funds. It is similar to that of the Budget. If Budget is not drawn, there is no reduction/refund at payoff.