thanks.
Then should I use my 2016's property tax bill and use the building value on that as cost basis? I think land is not depreciable. The overall taxable value on my 2016 property tax bill is still much lower than Redfin's estimate (which is close to how much I could get if I sell it in 2016) because the housing market rebounded quite a bit from 2012 to 2016.
