Ouch... hmm, I don't have many suggestions to give here. I waited until my parents moved to another state to get my first snake, lol. I wouldn't risk keeping a BP in an area where chemicals/fumes are common (painting), not to mention how difficult it could be to keep the enclosure at the right temperature during the winter. Just not a good idea.. If you have the ability to build a "room" off the garage, I can see that as your only option. As long as it is insulated and heated, and obviously secure from other animals being able to get in.