where do i go to source figures etc?
In victoria, we use the government publication for past 10 year performance.
http://services.land.vic.gov.au/landchannel/content/guide
(Sources vary state to state - you may need to buy data from a reputable provider)
We then look at say the top 10 the highest growth over a ten (or more - if you can get hold of older copies) year period to narrow down areas to look at.
Then I use realestate.com.au - and go to the "rent" tab.
See what sort of properties are getting what sort of rent in that area.
eg. a house might get $300 per week, a unit might get $200
Then go to the "buy" tab and see what sort of prices are being asked for those properties in that area.
So for the above example, in the same area, a house might be $500k, a unit might be $300k.
That gives a rental return of (300 x 52) / 500k = 3.12% for the house
and (200 x 52) / 300k = 3.47% for the unit
That's before we even allow for the rates, repairs, management fees etc - but let's keep it simple for now...
Now let's say you borrow the lot to buy the unit ($300k) at 7% interest.
So now to hold the property you bleed 7% - 3.47% = 3.53% pa.
Seeing as cash in the bank can get you 6%, you'd really want this property to be growing at 11% just to make the exercise even remotely worthwhile...
Hope this makes sense....
Finally, if all the analysis becomes too hard, we just say "bugger it" and buy in the suburb where we live (because we know the area, we know a good prices when we see one, and we know the growth)
The Y-man