Is There a Depreciation Schedule for Building Properties?

A lot of investors out there think their propertyis too old and dingy to get a depreciation schedule. Yet, that was my thoughts as well. I'm to be on the boll wen, try and maximize a what you can whilst it is an investment property. Now, moving on to one that certainly i found very interesting from cas bishop and casad. We are building, and there is now a clause that says materials will possibly keep rising in price, and those costs will be passed on. It's a bit scary to think you might sign a contract for the price of a house, get the loan, but half way through it could be x amount extra. Is there anything