If i rent 2nd floor apt in a multiunit property & live on the 1st floor, how can i deduct improvenments made to the rental apt but divide mortgage premium?

amitc · ‎June 3, 2019

How do i do this when i choose recommended option - "...let turbotax do the math"

If i rent 2nd floor apt in a multiunit property &amp; live on the 1st floor, how can i deduct improvenments made to the rental apt but divide mortgage premium?