Using Visiblity Graphics (VG) to Hide and Display Walls by Function

Changing the visibility of certain objects is quite easy with the use of Revit's Visibility Graphic Overrides for 3D Views. The easiest way to access it is by pressing 'V' then 'G' or by going to View>Graphics>Visibility/Graphics.

Exterior and Interior Walls

Exterior Walls

Interior Walls

Visibility Graphics 'Filters'

Exterior Walls Filter

Foundation Walls Filter

Interior Walls Filter

Revit Extension

So, I'm installing Revit Extensions and the Extension SDK today- looking forward to learning even more about the inner-workings of Revit.