On Wednesday, November 23, 2016 at 5:04:20 PM UTC-6, Casey wrote:
Thanks Dan. I was thinking that attached residential garages only require sheet rock. And actually codes are pretty sorry. They are only minimums.

Not sure if it's National Fire Code, but many areas require a self-closing door between garage/hangar and any living space and the door has to meet fire code (e.g., a "15 minute" door) to slow any fire (and prevent gas fumes from migrating in).