In Texas. Main residence and have resided the entire tax year for 2016. Having difficulty figuring out what all is considered building materials during a residential remodel (bathrooms, new bath, add new home theater in unfinished attic). I thought flooring (tile), hardware (faucets etc..), frameless shower glass, tub, toilets, etc. Items I'm not so sure about would be...the in wall speakers around the room, projector, seats, microwave and fridge to go in the new space. Any help would be greatly appreciated and needed. Thank you.