Hey. I'm making the house from The Dreamhouse Kings book series. It's based on the map in the front pages of the book. So far I only have the floor plans for the first and seconds floors. Do you think I should do a basement?

Click for the images for full size.I would add pictures of the map that's in the book, but I can't find my camera or any pictures on Google.
Also. Does anyone know were the secret door is? I tried looking through the books to find it's location, but no success.