Working from construction drawings speeds up the process πI've cranked out models faster from sketches
Maxwell was used to accurately model the lighting from an HDRI and many elements from the Podium model pack bring a bit of realism to a smaller budget render.
I did this one in 4 hours from a JPG architectural sketch
http://i215.photobucket.com/albums/cc246/seabass84/Render2-2_zps55b154fa.png