How do you make an upstairs in Sims 3?

Answer 1

Go onto build mode and press the stairs logo.Click the stairs you want and place it on a flat surface.Then you can make the upstairs how you wish.(If this doesn't work,then I don't know what to do).By SakuraFan4Ever.

Answer 2

First you need a stair case, then go up to the top, pick the build mode then put in a floor.

Answer 3

buy a stairs in build mode, then click upstairs and say go here or click on the stairs and say go upstairs

Answer 4

To add an upstairs to your Sims house in Sims 3 you simply buy stair and put somewhere then push page up and you should have a second floor!

Answer 5

As upstarirs if you mean second floor,press page up button on your keyboard then you can see the second floor and put there what ever stuff you want.hope it'll helpful for you :)