Paul, you can claim 'lost' depreciation (and any other deductions you failed to claim) but it means amending the tax returns for previous years. Sometimes it's not worth doing.
Scott
Certainly worth having a chat with someone. If you have a bunch of photos, any QS will be able to give you a ballpark on the depreciation claimable.
There will be depreciation in the reno and possibly in some of the other Assets.
Scott