Concept design version 3.0.

Once you have clicked the green LOAD MODEL button:

The best way to use the 3D Viewer is to click on the Rendering Techniques button & select Standard, standard is the high resolution material view.

You can rotate, slide, move forward & backwards as if you are walking through the house.  If you have VR Goggles you can even look around instead of using your mouse.

There are quite a few options to look at the 3D model.  Cross Section sliders, Glass House & more.  Test them all out so you can get the best idea of the workings of the house design.

Obviously, colours, textures & materials are as close as we can get but are not a true representation of the finished house.