A commercial mortgage is a mortgage loan secured by commercial property, such as an office building, shopping center, industrial warehouse, or apartment complex. The proceeds from a commercial mortgage are typically used to acquire, refinance, or redevelop commercial property. Commercial mortgages are structured to meet the needs of the borrower and the lender. Key terms include the loan amount (sometimes referred to as "loan proceeds"), interest rate, term (sometimes referred to as the "maturity"), amortization schedule, and prepayment flexibility. Commercial mortgages are generally subject to extensive underwriting and due diligence prior to closing. The lender's underwriting process may include a financial review of the property and the property owner (or "sponsor"), as well as commissioning and review of various third-party reports, such as an appraisal. There were $3.1 trillion of commercial and multifamily mortgages outstanding in the U.S. as of June 30, 2013. Of these mortgages, approximately 49% were held by banks, 18% were held by asset-backed trusts (issuers of CMBS), 12% were held by government-sponsored enterprises and Agency and GSE-backed mortgage pools, and 10% were held by life insurance companies. Terms Loan amount The loan amount of a commercial mortgage is generally determined based on loan to value (LTV) and debt service coverage ratios, more fully discussed below in the section on underwriting standards. Loan structure Commercial mortgages can be structured as first liens or, if a greater loan amount is desired, the borrower may be able to obtain subordinate financing as well, sometimes structured as a mezzanine note or as preferred equity, which generally carries a higher interest rate. Interest rate Interest rates for commercial mortgages may be fixed-rate or floating rate. Fixed-rate mortgages on stabilized commercial real estate are generally priced based on a spread to swaps, with the swap spread matched to the term of the loan. Market interest rates as well as underwriting factors greatly affect the interest rate quoted on a particular piece of commercial real estate. Interest rates for commercial mortgages are usually higher than those for residential mortgages. Fees Many commercial mortgage lenders require an application fee or good-faith deposit, which is typically used by the lender to cover underwriting expenses such as an appraisal on the property. Commercial mortgages may also have origination or underwriting fees (paid at close as a reduction in loan proceeds) and/or exit fees (paid when the loan is repaid). Term The term of a commercial mortgage