Is there such t thing "pre-approval" for non-traditional finance?

[Adam Kecskes]

Hi, all,

I'm seeking to purchase a duplex, preferably a 4-plex, in Austin, TX within the next three months. I'm trying to understand what I need, financially speaking, before I go to the seller's agent to express interest.

Traditionally, I'd just get pre-approved and what not. However, I have had non-traditional income (i.e. non-W2, options trading, public speaking and rentals) for the past four years. Do personal lenders and hard money lenders have a pre-approval type processes?

I have funding for downpayment, repairs, and 1st year maintenance s; the units that interest me should cash flow well with a little fixing up, but it all means nothing if I can't approach the agent with a meaningful finance solution, right? So what are my options? 

Thanks for the feedbacK!