Now for more about ME, what the fans REALLY WANT TO SEE :) This is my new high rise. I LOVE it :) lots of pix to share. If anyone wants to know how to build one, tweet me for directions. materials cost us about $300 and we get MUCH more this way then by buying pre-made smaller living quarters from pet stores. Smaller ones can be made. this one has five levels, can add 3 more levels if needed, 5 feet by 2 feet pens.