The Australian and Victorian governments have put together some very useful information for home builders and renovators. Of particular value is the website www.yourenergysavings.gov.au
There are also several Grants available to assist in the installation of water and energy saving products. To learn more and see if you’re elligible visit www.yourenergysavings.gov.au/rebates
There is also a plethora of information about designing your home, the many factors you may (or may not) wish to consider in the “Technical Manual” located on the Federal Governments website www.yourhome.gov.au This site has many items of a general nature as well as some examples of climate/location specific design features. It’s interesting to see how other people have attempted to meet their local constraints in designing and building their homes.