Lenders are considered to be direct lenders if they fund their own loans. A "direct lender" can range anywhere from the biggest lender to a very tiny one. Banks and savings & loans obviously have deposits they can use to fund loans with, but they usually use "warehouse lines of credit" from which they draw the money to fund the loans. Smaller institutions also have warehouse lines of credit from which they draw money to fund loans.
Direct lenders usually fit into the category of mortgage bankers or portfolio lenders, but not always.
One way you used to be able to distinguish a direct lender was from the fact that the loan documents were drawn up in their name, but this is no longer the case. Even the tiniest mortgage broker can make arrangements to fund loans in their own name.
