Hexa, how exactly do you find these DHA houses selling halfway through their lease???????
two ways... Allhomes or from the REA directly
when searching, start with oldest listings first.. good chance those will be DHA Standard lease is 9+3 for the existing ones.... 12+3 for brand newies. If you see a "rented until 2011", then that is likely a DHA property leased in 2002.
Just don't expect any cheap bargains... DHA prefer a bit of quality, so in the ACT, you will be needing to spend $400k+ for a 3br townhouse... or $450k+ (4br).
If for some reason you make purchasing decision when drunk and have $500k+... the DHA invest website has listings of their brand new properties. You will see that they are closer to a 4% yield but prob give ok depreciation returns.
EDIT: looked at twobobsworth's link.. yay for ACT property price premiums