So the idea is roughly as follows.
- Get a mortgage & buy a house to be your home.
- Interest only repayments.
- Pay interest repayments & invest the difference.
- in four years there should be sufficient funds for deposit on 2nd property.
- Repeat interest only option & rent out house #2
- Within 2.5 years, savings from house #1&2 should yield deposit for 3rd house
- Repeat etc.