Do you want to build a room completely FREE? Well here is a little tip that will allow you to, the rooms can be any size and do not have to be 4x4. Please note that you will have to keep your walls down if using this tip as the room in front will show as an exterior wall and not allow you to see your items inside your 5th room. Also Mushrooms, Ferns and Grass can appear through the floor tiles of your 5th room using this method. However if your happy with these little niggles...... Happy Building!
This The Sims Social Tip was taken from The Playfish Forums