How do you move floors on Sims 3?

Answer 1

basically the same as the previous sims expansions you build the main floor or a basement if you choose, add a staircase, make sure you add some flooring first otherwise you can put in a staircase, and just go about it.

Answer 2

You have to put stairs then put carpet on the next floor so your sims can walk on it....if this isn't helpful then look at the instructions book

Answer 3

You can't dummo because your Sims r always on it basically. So does that answer you stupid question?