Deductions while converting my primary residence to a mid-term/short term rental

I am in the process of renovating and furnishing my primary residence townhome into a mid or short term rental. I've owned the property for four years. Does the fact that it is now my primary residence have any impact on what I can deduct from my taxable income? 

Also, this change will happen in the 2nd half of the year. In order to claim these deductions, do I have to have income coming in from the converted property for more than a certain portion of the year? Thanks for any help!