Pay close attention to the building in the right hand side background because that is the rather modern (for 1966/7 anyway) looking side of St Joseph's College on the north side of Kennedy Road (#7).
The problem I had in identifying this location is that the road shows a distinct large curve (see third picture) around the front of the property. This curve has gone and the road it leads to can actually be seen in this post. It's the small driveway that leads around the back of Kennedy Apartments. All the other buildings along this strip of Kennedy Road date back to before the film was made which only left #32 as the potential and it was also confirmed to me in a brief shot (taken from that last scene I just linked to) as the guys are running down the steps to escape arrest at their hotel. I didn't include the shot here (because at the time it didn't seem important) but it shows a car waiting foir them at the bottom of the steps and lo-and-behold in the background is the same crumbly wall also seen in picture 3 above.
So there you go, another mystery solved and a brief glimpse at the old mansion that used to sit at #32 Kennedy Road.
Unfortunately I can't find anymore information about it, so if anyone can remember the place from pre-1973 (i.e. before Kenville was built) I would love to hear about it.