I think he is referring to the changing times since 1958. In 1958 Estate agents (UK term) or realty estate agents (US.A term) and Mortgage or loan companies, would have been located in the same area as the house they sold, or the loan was needed.
Now today with the use of the internet these companies can be anywhere. I believe this is more so in The U.S.A where they have a slightly different system of agents sharing commissions.