What a brilliant idea to recycle PET water bottles! Warn you if you would like to build one. It takes thousands of water bottles to build one house like this, and for sure it takes a long time to collect all the water bottles, unless you are running a recycling machine. And the hardest part to me in this project is not building this house itself, but to peeling off all the labels. Good news is that once you build one, it lasts pretty long if you take good care of them. Continue to check out how to build it on Ana-white in the following link.