It is basic and goes like this: Buy a duplexMove into on of the unitsRent out the other unitLive free of charge because your renters pay your mortgageThere is a lot more to learn about collaborations and investing in multi-family homes however this might simply whet your appetite to get more information about it.There are many things to find out from single-family houses before you should attempt to move into multi-family houses. Start with single household houses first and progress in residential or commercial properties as your skills development. As you can see there are several ways to fund homes and this list is simply a few of them.