Cinema 4D Version 8.5 Basic Modeling
The intent of this tutorial is to show how to make a very low poly house model in Cinema 4D using the Knife Tool in lieu of Booleans.
You will notice the same sequence is used each time after an object is Made Editable (C key).

• When in Polygon (Tool) mode you Select a face to make it active
• You use the Knife to 'cut' the surface where you want window\door openings to be.
• The new surface is Split (separated and copied) from the original to make independent objects.
• The original selected faces are deleted leaving you with window openings and window 'glass' panels.

Make a Cube with the values above - the small fillet radius will make the corners of the building less sharp.
This does add polys but the resulting 3ds model will be about 40KB with 5 windows, frames, door, sign and a cheesy wood stove.