Assumption of Loan Requirement Letter for disaster loan servicing action request packages. About this document and download.All lenders and CDCs should be cognizant of the loan program requirements for the assumption, assignment, and sale of SBA loans. What Is Required to Assume an SBA 504 Loan? Are SBA 7(a) Loans Assumable? Fortunately for borrowers, SBA loans, including the SBA 7(a) loan , are fully assumable with SBA approval. Another option to sell a business with an SBA loan is for the buyer to assume the loan. SBA loans are fully assumable with SBA approval. Riverside Bank offers several U.S. Small Business Administration loans and an expert team to help you through the process. Loan servicing and loan modification information from Carrington Mortgage.