I didn't like the lack of granularity of modeling the buildings on top of the low-res satellite image as in my previous posts, so I imported the building map into Photoshop (erasing all the good bits) and made an image to texture a plane in SketchUp.
Here is the image on the surface. I used the square tool and the line tool to make the outline.
I Push/Pulled the outline into roughly one, maybe two stories. Here is the model with some transparency options so you can see the blueprint beneath it.
Here is the opaque model with SketchUp's built-in Shadow settings activated. You can set seasonal and time settings extremely easily - a slider.
I really liked using the blueprint image, and since it was oriented correctly I didn't have to adjust the axes in SketchUp, which admittedly would be trivial, but I just didn't feel like it.
It took me about five minutes, maybe, to make the building like this, and it is much closer to the actual dimensions/scale than the other way. Sometimes you don't have the luxury of having the blueprints, so I'll probably switch back and forth between methods.