Your question prompted me to write the Alcohol board and here is the answer I received:
Homebrew does not require a liquor license when it is produced for personal use (not sold). In Arizona it is unlawful to sell liquor without a license. Unfortunately, there is no license available for a residential location.
You may reference azliquor.gov for more information if needed.
In short, it's illegal to sell out of your garage...
I've heard from a few others that it has to be completely seperate from your residence as well. No doors connecting from residence to brewery as in a garage door. I assume you brew at your house as well. Good luck with your adventure!