Assumption of Loan Requirement Letter for disaster loan servicing action request packages. About this document and download.What Is Required to Assume an SBA 504 Loan? Documentary stamp taxes are payable on a mortgage assumption agreement only when the original mortgagor is released. The SBA offers information on small business loans, grants, bonds and other financial assistance. Complete the assumption agreement: Fill out and sign the loan assumption agreement, which legally transfers the mortgage responsibility to you. I am trying to complete the required application to assume a VA mortgage loan from my parents. Now we are in the process of me completely assuming the loan. A statement in a mortgage contract forbidding the assumption of the mortgage without the prior approval of the lender. Mortgage Assistance application.