Hello, I have bought the 4.4.1 mac version of sweet home 3d software yesterday. I already fell in love with it.. Brilliant software.

I have the same requirement as the starter of this thread.

* Basement
* 1st floor
* 2nd floor

Since it is few years asking this question, I am sure we must be able to basement.. but I just can't figure it out.. could you please help me on "how to add basement"