The current 2006 Fannie MaeA New York stock exchange company. It is a public company that operates under a federal charter and is the nation’s largest source of financing for home mortgages. Fannie Mae does not lend money directly to consumers but instead works to ensure that mortgage funds are available and affordable, by purchasing mortgage loans from institutions that lend directly to consumers..../Freddie Mac loan limit for a single-family home is $417,000 and is higher in Alaska, Guam, Hawaii, and the U.S. Virgin Islands. The Fannie Mae loan limit is $533,850 for a two-unit home; $645,300 for a three-unit home; and $801,950 for a four-unit home. Also referred to as the “conventional loan limit.”