Below are some photos from the initial assembly of the building using Korber factory walls.
I used Squadron White Putty to seal up the edges where the panels met, and sanded it down before paint. The walls are different colors since I was using both new and old stock. The wood stock on the inside is both for support (warping) and for attachment of the flooring. The overflow bin building will fit into the hole in the bottom photo. I want to add lights to each floor but since all but the roof will be glued in the customer is going to need access to get to the lights. I have an idea about a pull out channel that houses the LED strips.......................