The truth is unless you find a rent to own or a FSBO that's willing to owner finance I'm afraid your odds are not so good, however don't despair. I just purchased a $385,000.00 home using owner financing at a great rate with an assumable option. There are so many sellers willing to NOT loose their home or investment property that the ground is fertile for the aformentioned scenario. Just make sure you use a very competant real estate attorney to draft and or review the docs i.e.( the note,the loan agreement, the escrow requirements/details, the settlement workout, title search...ect.
Hope that helps.