Dreamgirl – agents charge about 10% (+GST) in the ACT to manage properties – but you may be able to negotiate this to 8.5-9% (+GST) – particularly if it’s an agent nearby who doesn’t need to travel. My wife and I are similarly considering whether (if we move interstate for work) the advantages of renting / selling. Just check out the credentials of the agents though.
Vacancy rates are low and lower in some areas – not sure about north Belconnen to be honest but all over Canberra is better than most other capitals – also because of the homes lost in the January bushfires.