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? The assumption must not have a negative financial impact on the business. The terms of the assumption must not include a real estate contract, i.e. , the seller may not retain title to the property until an agreed upon amount is paid. 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. At least one field must be filled in. Project means the North Tarrant Express Project as defined in the RFP, including the.