NigelOz
From the Queensland context, here is a case that may be useful.
this link to a brief overview https://www.piperalderman.com.au/__files/f/5350/Nobbys%20Outlook%20Update%20v2%201213.pdf
and this link to the case
https://www.sclqld.org.au/caselaw/QDC/2013/301
These lot owners recently put the entire scheme on the market for $30 million.