Assumption of Loan Requirement Letter for disaster loan servicing action request packages. About this document and download.Can An SBA 504 Loan Be Assumed? Many types of loans are not assumable. SBA loans, including the SBA 7(a) loan, are fully assumable with SBA approval. To be approved for an SBA loan, you need to show that you and the business have a history and capability of paying back what you borrow. Loan servicing and loan modification information from Carrington Mortgage. The buyer would assume the real estate or lease where business is as well as the loan as part of the purchase. You can use SBA's Lender Match tool to connect with a participating SBA lender. You will apply for your loan directly through your lender.