As said above boas are not that big. I have quite a few and they don't take up much space. I guess if I were to stack all the cages perfectly on the same wall it would be a space no longer then 8 feet long by 7 feet high. I only had one very large boa that I would have called a true giant. She was every bit of 10 feet in length and had a homemade cage that was 8x3x2.