Need an answer on a RESPA loan. Are co-borrowers required to sign preliminaries e.g. "Affiliated Business Arrangement Disclosure Statement", "Disclosure of Right to Receive a Copy of an Appraisal", "GFE", or "Servicing Disclosure Statement"? The co-borrowers do not have an interest in the mortgaged property; however, they are needed because of their good credit (parents of one of the borrowers).