I just put a python script up on google code which you can use to convert an allhomes.com.au page (like this one for all the property listings in Braddon). I’m using it with NetNewsWire’s script subscription feature, and it seems to have done exactly what I want for the last week or so.

http://code.google.com/p/allhomes-rss/

(I’m pretty new to python, so anyone who’d like to take the time to point out where I’m making life hard for myself in there is most welcome)