Like an FHA I had to live in one of the units for 12 months but I luckily didn't have a single vacancy through my first year and was able to not only pay all of he expenses but cash flow a couple hundred dollars every month.Now my 12 months is up and my unit that is being rented out is even more icing on the cake.

So you underwrite conservatively and then if it goes better than that you have icing on the cake.As another investor Brian Burke put  it on a podcast he mentioned (perform to perfection).