Gander:

As far as I know there isn't a site where you can find completed SH3D architectural models. There are a few more examples here , but they concentrate on interior design.

It seems I am one of relatively few people that uses SH3D for architectural design, because (1) it's easy to use and (2) it enables me to push the program to its limits.

I have several partly finished models, which I can show here if you're interested.

Hans