I guess the question really is, why not?
Whilst Brokers have been around for as long as the Banks have been knocking back clients, the Mortgage Broking industry in Australia really started to become active in its current form in the early 1990's.
Some recent research shows that Mortgage Brokers across Australia now assist in the arranging of the finance for approx. 55% of all new loans. This is a big number and it continues to grow. The figure varies from lender to lender but in some instances it can be as high as 100% for institutions that operate purely through the Broker channel. Whilst this is a little obvious, the figure is as high as 80% for a couple of the major banks, despite them having in-house lending staff.