If you were wondering when the nbn will be available at your home or business, the nbn have recently improved their address checker on their website (http://www.nbnco.com.au/connect-home-or-business/check-your-address.html). This will now give an estimate of the availability of the nbn at your address and the type of connection you can get. It is based on nbn's updated three year construction plan. If a rollout is not planned or underway then you will be advised that you can access the skymuster satellite service. This is an improvement as previous searches only advised when building may commence and did not give a detailed description of what you may be able to access.
In the Chittering Shire, the address checker advises that nbn fixed wireless services are planned to be available in March 2017 in Upper Chittering. It should be noted that these plans are subject to change, but this is looking promising for that area. Lower Chittering and Bindoon are slated for October to December 2017 and will also be receiving fixed wireless within that coverage area. Building has also commenced in townsites throughout the Gingin Shire, with some sites already available.
The nbn coverage map is useful if you would like to see how far the fixed wireless coverage goes in your area. It will also show the progress of the fixed wired technologies and can be accessed at the nbn website (http://www.nbnco.com.au/learn-about-the-nbn/rollout-map.html).