I expect this to take 5-10 years.Once I get to that goal then I will start focusing on the net worth goal, I am fine with achieving that goal over a 30 year span of buying one house per year if I have to, but hopefully I can speed up that process over time. 

No wonder why homes are flying off the MLS in such short time spans.

Effective life span is down to 16 years.

This is in a span of 15 years by the way.

Australia is an insanely expensive market these days the these books span it's explosion from somewhat affordable to off the charts expensive (the whole country is like SFO). 

Examples: Where 2MM homes built in your area, in the span of 6 months, but population growth doesn't match the housing growth? 

Life span of 10 years.

Roof 25 year life span, floors 10 years, hvac 20 years, appliances and hot water heater 12 years, etc. 

Let]s look at floors. 10 year life span.

Is it advisable to get multiple mortgage loans in a short span of time (assuming your credit and income can 2.