4 houses and you are done.
just like monopoly but better.
some people live in apartments and move every year for over 10 years. I know people living in a apartment the SAME apartment over the same 8 years.
Buy a house, rent out the other two rooms, live rent free 1 year. later move to another house put 3.5% down because you should be able to save that because you are living rent free.
Repeat this every year for 5 years, on the last house it can be your biggest home, because you have 4 rentals.
FHA is a great thing. USDA loans is 0% down and just pay closing. Some people love their job and never want to leave. BUT you want extra income, if you are moving anyways move smartly.
4 moves in 4 years and you are done.
Even faster process three 4plexes and you are done. Imagine each unit in fourplex renting for $750 by time you move 3 times. you would have 11 units x $750= $8250 coming in a month before mortgages. It would be a great way to investment and shorter time moving and vacancy losses.