My husband and I converted a screened-in porch to a Chin habitat by putting up plexiglass over all of the screen. It is approx. 10' x 12'. We added an opening for a room AC and have a good heater for the winter. I live on the southern coast of NC and while it does get cold in the winter and really hot in the summer here, I have always been able to maintain a decent temp for them at all times. When I adopted my first Chin, my husband built a cage that is 3' tall x 6' long and 24" deep. That wasn't enough for me, so while we do use it, it is inside the porch with the doors open. I use large cardboard boxes elsewhere and they prefer those over their expensive cage. They eventually chew them up, but they are easily replaced. I cut openings into each one so they have multiple ways in and out. They LOVE new boxes and I have different sizes to mix it up. One of their absolute favors is a long box about 5' long they use as a tunnel. I also have quite a few large rocks and some slate in their enclosure. They have two cage trays to pee in and do use them more than you would think. I also have small towels down and they will pee on those the most often and they are easily washed and replaced. I try to change it up for them all the time by rearranging the rock pile in their cage or moving the boxes into different configurations. While I do have a water bottle at all times, they prefer to drink from a bowl. I just have to change it daily so it stays clean. This will likely surprise many, but during the winter I hang a heat lamp over a large piece of slate. I keep it on 24/7 from mid October to the end of March or so. I cannot tell you how often they get under it when the temp in there is in the 60's! I also have a Chin disc for them to use and the only thing I have ever seen one of them do is spin it with their hand because they have tons of room to run and climb!