I only had about five hours to do this, about 45 minutes to model and the rest of the time fiddling with the background and lights.
I guess it worked, the client signed a contract when he saw the print.
Plan view in Autocad, dxf to Blender, extruded lines for the walls. Internal ray-tracer, AO was off on the print for the client, but AO is on on this view. A little bit of post-processing was done in Corel Photo-Paint to tweak the color balance and contrast (although you can’t really tell in this low-res image). Then I used CorelDraw to add the logo, labels, and border. Finally printed on 13x19 Epson Enhanced Matte paper.