This Agreement supplements the Loan Guarantee Agreement, SBA Form 750, and, if applicable, SBA Form 750B (for shortterm loans), between Lender and SBA. This form helps the SBA and its approved lending partners to assess the background of a business and its owners, including their personal character.SBA Form 148 (Unconditional Guarantee) and SBA Form 148L (Limited Guarantee) are the standard documents for providing a guaranty on an SBA loan. When applying for an SBA 7(a) loan, you must complete SBA Form 1919. Instead, go to the SBA Lender Match page and fill out the required form with information about your business. To continue with the application process click. "Start" to complete SBA. SBA disaster home loans. Points. This Agreement supplements the Loan Guarantee Agreement, SBA Form 750, and, if applicable, SBA Form 750B (for short-term loans), between Lender and SBA.