Via the LF Economics client letter:
Since our August 2017 report arguing the peak had come and gone, and as discussed with yourself, or your colleagues over the last several months, we had been patiently and discretely gathering in-the-field research to validate a few outstanding findings that required time to make an objective analysis for the status of the Sydney housing market. Based on these findings, I think it is fair to say that the credit-fuelled Sydney housing bubble has been pricked and appears to be deflating at a relatively moderate to fast pace relative to what the official data is suggesting.
Our key in-the-field findings to justify our view are as follows:

