My parents live on a 600 sqm block a couple of minutes from a train station in the outer suburbs of Sydney.
Based on what is happening on other (very) nearby blocks, I imagine it is likely that they'll be getting offers from developers in the next few years.
They are getting on (mid-late 60s, empty nest etc.) so would probably be interested when an offer comes in.
If anyone has any best practices for maximising sale prices via negotiation in cases like this, I'll pass it on to them - it would be much appreciated.
Be like Ross. Start a 'Friends' with neighbours.