A loan is considered jumbo if the amount of the mortgage exceeds loan-servicing limits set by Fannie Mae and Freddie Mac — currently $510,400 for a single-family home in all states (except Hawaii and Alaska and a few federally designated high-cost markets, where the limit is $765,600). A Jumbo mortgage is any loan amount above the national conforming loan limit, which is $424,100 in 2017 for most areas, but can be more in some high-cost markets. For example, conforming loans can top out at $636,150 in Alaska, Washington, D.C., and metro areas in other high-demand housing markets. Some borrowers who struggle to secure a jumbo loan may be able to qualify for a conforming loan and use a second piggyback mortgage plus put more cash down to get below the conforming loan limits, which are $484,350 for a single-family home throughout most of the country and $726,525 in designated high-cost areas.