I am currently using Sweet home 3D for modeling my home.
It will be nice if someone adds in more detail about this software and how to install in on Ubuntu.
Also is it possible to change the units from meters to square feet?
Sweet home 3D is in the software Center. All you have to do to install it is open the Ubuntu Software Center, search for "Sweet Home 3D" and click the 'install' button. If you want to know more about the software,you can visit it's official website.
To change the units from the metric to the imperial system, there is an option in the preferences. In the 'File' menu click 'Preferences' and change the unit option to whatever you prefer.
What is Sweet Home 3D?
Sweet Home 3D is a free architectural design software application that helps you place your furniture on a house 2D plan, with a 3D preview.In Sweet Home 3D, you can import furniture and arrange pieces of furniture to create a virtual environment. Source
How to install Sweet Home 3D?