To add a swamp cooler to a garage is pretty simple, and I'm also in a housing association. I'm not sure what they think about swamp coolers (I just did it and didn't ask) but you could put the whole swamp cooler in the garage and have a tube bringing air in. Swamp coolers generate no heat and all they need is air from outside coming in and some way to let it out (small vent or leaving the garage door open 1"
. Depending on which swamp cooler you get, some of them come made for that, where you can just buy some ductwork and bolt it right on and then run it to the wall. You could set the swamp cooler against a wall, on the inside of the garage and just run the duct right behind it through the wall, and it would only be about 6" of ductwork. They add humidity to the garage (mine's around 60-70 percent) and will keep the garage in the 70's on the HOTTEST of days (110-120) and they only use as much power as a fan. Plus, they cost nothing compared to air conditioners. An A/C would run several hundred dollars and probably the best swamp you can buy would be no more than 3-400. I think mine was like 270. It's small. A/C units also get very hot, even if you have a pipe running out the wall. My parents had a nice big window A/C that they gave me for my garage when I was getting my swamp cooler and I either had to make a bigger hole in the wall to run it through the wall, or try the duct thing and I tried the duct thing and it made alot of heat out of the sides also and top and bottom. For it to work right, only the very front could be inside the garage. Plus, they dry out the air. So now I have a nice big new expensive A/C unit sitting in the garage next to my swamp cooler doing nothing. Insulating the garage may or may not be needed at all. If it's really hot outside, then maybe go for it, but if you're using a swamp anyways, you're hardly wasting power to just let it run. In the summer evenings, the sun hits my garage door and it gets pretty warm, so I went to Home Depot and got a few big sheets of 3/4" styrofoam and lined the door with it on the inside. It probably helped about 5-8 degrees worth. It only cost me about 15 bucks to do. Just the lights in my garage are the biggest reason it gets hot. With 20 spot bulbs they can make a room warm quick. You're not incubating the eggs in the garage are you? I don't think that's what you meant, but I'd keep them in a more stable area in case that it what you meant. A few times I've kept a few eggs from a few clutches in the garage for the first few months, just to see what will happen when hatching time comes. In the summer the garage is warmer than my house and in the winter it's cooler. If you can avoid it, don't build your own cage. The way I did mine looks great, but I have had problems ever since I moved the first chameleon in with escapee crickets and once a roach gets away in that thing I never see it again (I just have bad dreams for a week after). Plus, it's an ongoing battle with spiders and crickets. By the time I had finished it, I had probably spent enough on materials and hours and hours of work that I could have easily bought 10 screen cages to replace it. It's harder to clean, harder to move around and I have to use a ladder to reach the top of it (it's 8' tall) and a bucket or step stool to even reach the top cages. Find a screen cage seller that will give you a good deal on them if you're buying so many. Then get a couple "gorilla racks" and line the cages up nicely. The hard part with lotsa chams in one room is keeping them from seeing eachother. Lined up cages can just have a paper barrier inbetween them, but a line of cages can only be so long. I still need to rig up a shower curtain type thing in there to make my garage into 2 or 3 rooms. So far, they don't seem to notice eachother much as they are all eating and drinking fine and nobody's "flared up." Good luck and ask if you have any more questions.

-----
Tyler Stewart
Las Vegas NV