More ideas from Nan
Hide the litter box in a drawer with an aesthetically pleasing cutout for a door! I think this would be great in the mud or laundry room.

really likes this! The hole in the drawer and top cat window are amazing!Pet-Friendly Architecture - The Plus-Nyan Cat House (GALLERY) and like OMG! get some yourself some pawtastic adorable cat apparel!

cat shelves

Cat walk beams that built in open air space. Cat steps that goes up to the cat walk. Cat house under the bathroom sink. Cat door in every do.

Cat stairs

Cat stairs - A Life With Large Opening / ON design partners. I see my sisters cat figuring out how to get up, then meowing to be carried down.