You can't compare it to when you lived in it; you need to compare it to when you are renting an apartment (without the Itemized Deductions).
Let's say you sell the home and rent the apartment. You are already 'losing' your deduction for Mortgage Interest and Property taxes. Assuming that you Itemize your deductions, that is already increasing your tax.
Now compare it to renting out the home. You now 'get back' the deduction for Mortgage Interest and Property Taxes to offset part of the rental income. There is a good change that the Standard Deduction would be larger than your Itemized deductions, which sort-of effectively means you are getting an 'extra' deduction over Itemizing your deductions.
Buy the CD/download version of TurboTax. Enter your estimated 2017 information, first as if you do NOT rent out the house (don't deduct the Mortgage Interest and Property taxes as Itemized deductions). Then "save as" the file and enter the information for renting the house. Then compare the results. That will give you a better idea for what the tax results would be, and give you more to base your decision on.
