Get your taxes done using TurboTax

It's all right to include a reasonable figure for any capital improvements you made to the property such as a new kitchen or a new roof without actual receipts if it's evident those improvements were made. You must also account for the depreciation you could have used on these as well

Depreciation is quite simple to calculate if you know the year you placed the property in service and when you stopped renting it. The chart for all years is included below and you simply add the percentages for all years then multiply it by the original cost of the building (not the land) to arrive at the total of depreciation used, or expensed on your returns over the years.

If you still feel you need assistance, you can use TurboTax Live:  How to switch to TurboTax Live