The size of the average jumbo home mortgage loans, (over $400,000) are growing in size and dollar amount in South Florida. They’re being provided by the willingness of lenders such as T D Bank, SunTrust, JPMorgan Chase Bank, and Bank of America to increase the size of their jumbo loan portfolios. The number of these loans, which are not backed by Fannie Mae, grew by 37.1 percent from 5,000 to 7,000 during 2013, with the total volume hitting $1.76bn.