I had the chance to visit Honeysuckle Creek before it was demolished. They essentially had just turned out the lights, locked the door, and went home. Everything was left in place as it was - equipment, office furniture, noticeboards, everything.
Unfortunately over the years, vandals trashed it. The place also had lots of contamination from asbestos, PCB, and other nasties. In the 90's it was completely demolished, and left as an empty paddock for many years.
Nearby Orroral Valley Tracking Station met the same fate.