Found this little jem on Relaxshacks.com. I've incorporated this idea into my own personal design for my future tiny home. I think it's a perfect way to deal with sleeping arrangements for a young family. My adjustments would be to have the top loft full width of the home and to make the bunk beds removeable if they are not already. So--even though the whole raw paint thing gives me the heebie jeebies--the design is brilliant.