From 01 April 2011, depreciation on building and items attached to the building are depreciated at zero %, thus there is no deduction for you.
However, there are lots of assets in your rental property for which you can claim deduction and reduce your taxes.
Commissioner’s view (TIB vol 22 No 4 May 2010) on a depreciable asset is to follow a 3 step process to ascertain whether the assets are a part of the building or are individual assets.