Not sure if all the information is correct as I thought it was only a half block, but anyway here's what I found.
http://www.realestate.com.au/cgi-bin/rsearch?a=o&id=105973701&f=20&p=10&t=res&ty=&fmt=&header=&cc=&c=86478781&s=vic&tm=1258350727
Apparently it's around a 627 sq metre block...