When I told them it was going to be an investment property until my wife returned to the location they changed all the rules.1) I no longer qualified for the low interest rate.2) I had to come up with 25% down. 3) I had to show them how much I would have based on the rental market in the area.4) I had to produce a letter stating how much the current rental rate was in my area and what the potential profit would be. 

I'm looking into purchasing a large condo or townhome (3+ bedrooms) on the cheap, investing some sweat equity and renting the extra spaces out to roommates to pack away equity and produce extra cash flow that can be invested in future properties. 

I'm looking to continue to build an income producing portfolio across different asset classes.As a side project, I'm starting a business that will connect farmland investors with farmland deals.  

I was wondering what search criteria has produced the best subject-to financing results?

Typically you'll find them to produce owner finance or lease option type deals.  

If you want to look at a 3-unit or 4-unit with a conventional loan, you will need a minimum of 25% down.I suggest you get the 2 to 4 unit property because of the relatively higher income they produce per dollar of purchase price.  

However, it would be a great turn of events if the combination of the two would allow combined resources to produce a better algorithm to formulate a more accurate price range.  

multiple sfh in a lower middle class neighborhood that each would produce about 100-250 cash flow per house.

LOL I agree with honesty being critical, but you also have innovative strategies that work, that you explain clearly, and a ton of experience.

I currently send 18,000 post cards a month, and it produces a good amount of leads, but very few of these leads are motivated.