The important feature is that the mortgage secures frequent and routine future advances to be added to the loan balance. Advance clause is a part of a contract that allows for additional loans to be made in the future, even if the lender is not obligated to do so.Current writing on the subject of secured future advances loans gives the impression that they are used chiefly if not solely to finance building construction. The Future Advances Endorsement insures the lender that the validity and enforceability of the mortgage will not be affected. Used to request issuance of a deed when property is being transferred out of the trust. Facsimile Assignment of Beneficial Interest. Deed of Trust Secures Future Advances. 3 "The institutional transaction out of which future advance law grew was the build- ing construction loan.