Starting up a family sub-prime mortgage business, please help

[Mike Trupiano]

My brother and I have recently decided to finally commit and launch our mortgage business. We just locked down a lease on a nice office building in a great location. The trouble we're having at this early stage is finding investors. 

My plan was to contact reputable realtors in my area and incentivize them to refer their clientele to our company for financing.

Does anyone know a legal method to this approach? I personally phone interviewed dozens of realtors and had a lot of positive responses seeking incentive for these referrals since as of now all they get is the occasional lunch and pat on the back.

Let me know your thoughts, thank you BP community!