Canberra’s property bubble shows no signs of bursting, with commercial office sales on track to hit a record $1 billion this year and further price rises tipped for its red-hot housing market, now on a two-year streak.

Office transactions are already running well ahead of trend, with key sales including the $306 million purchase of the Services Australia headquarters by Charter Hall and Irongate Group paying Blackstone almost $74 million for an office building in Forrest.