Gidon,
As a noob I don't have a vast library of models to share, but I'll give it a shot.Remember what I said at the top of this page......nothing flashy.
We are in the process of building a new workshop for my wife.We were considering two different locations on our property,both with various limitations on what we could do.I started giving her options on floor plans,window layouts,site location etc.Just simple boxes with a roof on top.As with any building project we went through many versions, most of which were put out of their misery with the delete key.
Here's an example for site #2:Triple shop.skp
Pretty rudimentary SU work for sure but it really helped us determine what would work best for us.
And, a couple photos of how the actual project is going.

triple shop 1.JPG,triple shop 2.JPG

We chose the version in scene 7 of the skippy and couldn't be happier with the way it worked out.

As a builder I was able to refer to that very simple model and create quick sketches for my excavators,concrete sub,and myself for window and door layout,sf of sheathing,roofing etc.I like the way SU helps me visualize just the details I'm working on at the moment so I can move on with a project.We are about ready to start trimming the interior and I have some cabinet and trim details to work out..........I'll post another skippy of a couple things I'm working on.

Rich