Diversification of revenue streams is the key to a successful business during turbulent times.The mortgage manager role seems to be growing in appeal to originators and brokers, whose business model based on commission weakens.Listed broker Mortgage Choice was unable to provide guidance for financial year 2009 due to factors including the uncertainty of future broker commissions, taking the reactionary move to broaden product offerings through franchisees.For revenue diversification, Homeloans Limited is adopting a different business model and focusing on the management of mortgages, as revenue from non-bank loan origination continues to fall."Given the dislocation in the markets, on how our business model has been impacted and where it will fit in the future, a key strategy at the moment is just to make sure our cost base and our resourcing still matches our business levels, so we can still preserve profit," said Brian Jones, managing director of Homeloans."Do we see it as a diminishing opportunity that will regenerate in another format for ourselves and we capitalise on that? We have no doubt it will force a change to our business."The change Jones refers to is Homeloans' three revenue streams, which when combined increased 29 per cent for financial year 2008 - with an interesting change emerging when split.Mortgage origination fell eleven per cent to $12.5 million, while loan management increased 19 per cent to $20.6 million.The higher interest rate income contributed to a 40 per cent increase in interest income to $88 million."We are in both, so we originate and we manage."We probably see in the next twelve months - excluding acquisitions where we can quickly bulk up our numbers - but just on an organic basis we see origination in the non-bank sector as being a tough game, to the extent where we can still originate at an acceptable level and still grow our book. But we will manage more."The outlook for the non-bank sector and the mortgage management sector at the moment is probably not the organic growth piece. I have some doubts about that."The distribution piece of the value chain costs a little less now, but the jury is out if we can get the growth to leverage off those lower costs."But where can you get growth from and where is the value? There has been a reduction in acquisition costs, with the banks driving down broker commissions, and managing mortgages. There is a skill in that so that the customers remember you as a brand."