Jumbo & High Balance Loans: Whether your county lending limit is $647,200 or $970,800, if you go above that limit, you are no longer in the realm of the conventional mortgage. There are High-Balance Mortgage Loans, which are not as large or as strict as Jumbo Mortgage Loans. Jumbo can be in the millions and have low rates for the right borrower. There are so many options when you get into the high loan amounts, and should be discussed on a case by case basis. Sometimes a conventional loan of $647,200 with a $150,000 second mortgage is easier and more beneficial to the borrower than a high balance or jumbo.