My townhome is getting lots of interest with prospective renters, but almost everyone's first question is "What are your qualifications?"  

Start attending real estate agent meetings where agents from every brokerage tell each other of their new listings.These usually happen in the morning around 9am or so and take place at restaurants where they eat and talk together.Ask the agents about their clients to see how many investors they represent and are they looking for better financing then they already have.If your interest rates and loan qualifications are better than the competition you should get good leads soon.Offer a small finders fee for every investor they bring you that accepts your loan money.

Also, interest on {fixed rate} residential mortgages is calculated differently (compounded semi-annually, not in advance).Qualification is also a little more rigorous.  

My normal qualifications are a 550 credit score but I tell people we are flexible on this with a co-signer/high security deposit. 

I have $25,000 and a pre-qualification from my national bank for a loan. 

Also, be prepared for the trip down the qualification paperwork trail it can be tedious at times.

I am a banker and we LOVE to close loans to good customers, learn the products banks offer and the qualifications for the loan you want and you'll have no problem.

I know it’s easy for the ones who don’t meet the qualifications but what if 3 people all qualify and I pick one because they seem to be a better fit.

Very easy qualification and cash out is available. 

Saj Shah is right if he is willing to owner finance huge win because you don't have to worry about normal qualification standards.If you haven't already told him how much money you have to invest, try to find out how much cash he wants to have saved for another opportunity.Read up on rent control, you may have to cash for keys or other creative strategies to get current tenants out so you can charge market rents, so keep that in mind.