a couple of interesting concepts here:
http://www.impressions.net.au/dream-living-series/2getherness.html
wouldn't have thought you would be allowed to build this but I assume they are promoting this range for a reason? presumably you could also have a granny flat and then triple rent the property
http://www.summitnewhomes.com.au/altitude-series
prefab 2nd storeys... I know it has been done a little before but this seems a pretty slick run at it
http://www.impressions.net.au/dream-living-series/2getherness.html
wouldn't have thought you would be allowed to build this but I assume they are promoting this range for a reason? presumably you could also have a granny flat and then triple rent the property
http://www.summitnewhomes.com.au/altitude-series
prefab 2nd storeys... I know it has been done a little before but this seems a pretty slick run at it