Found out that since my new duplex is in the Gulf Opportunity Zone, I get to take 50% of the cost basis of the rental side and depreciate it all in one year. For a loss of about 45k. Only 25k will apply to this year's taxes, and the rest to next year. So according to the IRS I lost 25k renting the rental side of my duplex in the past year. Woo hoo!