What does the cash flow path look like?

[Paul Wakefield]

My wife is under the impression that you can’t make money on Real estate until a home is paid off. It’s definitely a point of contention for us. 

Can someone tell me what the path looks like to financial freedom? If my goal was to make 100k/year on RE, how many rental units would I need and how much time would it take. I know the answer is it depends but could someone put me in the ballpark? 

What does the cash flow progression look like from year 1 to year 15? I know it starts slow