- Originator of a loan.
A mortgage company is a company whose business is to create or finance mortgages for properties. A mortgage company is often just the originator of a loan. So, it is a financial institution who makes loans in return of fees (origination fees, loan servicing fees). It markets itself to potential borrowers and seeks funds from one of several client financial institutions that provide capital for the mortgage itself.
The Government regulates some parts of the lending process, but mortgage banking companies can set their own standards to determine who can get a mortgage.
Usually we make a mortgage to finance homes or refinance previous mortgages.
Then in case of non-payment, the mortgage banker can proceed to a prosecution operation in execution of the pledge.
- Depository Bank.
Mortgage banks can also be depository banks. These banks service the checking and savings needs of their clients.
Maybe you’re interested in: 13 Steps to proceed with mortgage banking in Vietnam
 « Mortgage Banker », Investopedia.
 « What’ is a Mortgage Company », Investopedia.
 Duncan Jenkins, « List the functions of a Mortgage Bank », Sapling.com.