…but a bigger house would probably be necessary. And something to keep the cats off it as the pictures show.
However, there’s a link somewhere on the site where I can e-mail the builder(s) about blueprints on how to build one. He said it cost $600 to make and his isn’t for sale. I would also agree that if a company built this for a profit, they’d probably charge at least $2000 for it. Now to improve my handyman skills beyond the flashlight holding my old man taught me.