Assumption of Loan Requirement Letter. Assumption of Loan Requirement Letter for disaster loan servicing action request packages.SBA 504 loans can only be assumed once, and the new loan must include a "due on sale or death" clause to prohibit any future assumptions. Are SBA 7(a) Loans Assumable? Fortunately for borrowers, SBA loans, including the SBA 7(a) loan , are fully assumable with SBA approval. Explore our Courses at AssumeList! Enhance your knowledge of real estate and financing options with expert-led training for homebuyers and investors. As a preferred SBA lender in the Bay Area, Fremont Bank is an excellent partner to help your business succeed. Talk to a Banker (800) 359-2265. The 7(a) loan program is SBA's primary business loan program for providing financial assistance to small businesses.