Wait a sec, you can place chunks and objects in different heights?
Viewing post in Baldi's Fun New School Ultimate comments
Yes you can and it has been a feature for like 2 years since they’ve worked on the floor builder. I was trying to add multi-height floor to this layout and it didn’t work out really well. If you really want to make a room tall or make multiple floors, press the up or down arrow, but do not add too much things when making a multi-height floors.