In talking to the lady I explained that I wanted to look into financing for an investment property.

No one wants to explain what happens behind closed doors.

It is better, much better, to compensate the rate of interest charged on other principal parts simply explaining to the other party the risks and benefits of a lower rate on other parts of principal. 

Note: I do not ever intend to be in this situation, but I would like to be able to explain to the seller how the process works. 

I post 5 day notice on 2nd of month and start eviction ( after I give them one chance to explain delay as I have everyone's e-mail and phone and we communicate openly when needed).They can; electronically depositWalk to one of my bank branches and depositUse Paypaluse any system they wishWorks pretty well. 

I also have a few investor clients who are interested in buying out of state, and I try to explain to them the risks in doing so....that you are putting your trust in people who you have no relationship with.

Maybe if you explained your goals we could better help you.  

Below is what a lender explained to me when I posed your question to him.They will need 15% or 25% of their own funds if they do not occupy one of the units.With Fannie Mae the maximum loans are:2 unit = 85%3-4 unit = 75%So investors need 15% or 25% down respectively.Now if they are primary residences, FHA may make the most sense, but you won’t necessarily be able to do more than 1 FHA loan.FHA max LTV’s are:2 unit – 96.5% financing3-4 unit is also 96.5% but some additional requirements exist.I would recommend talking to local banks as well.

Allow me to explain... it's a single family home that used to be a "duplex".

@Mike Sedlacek Thanks a ton for explaining the reporting terms.