I have a small 700 sf private garage building that is considered as utility occupancy. My question is what are the energy code requirements for this structure? I was told that if you heat it then you should comply with IECC climate zone requirements for the building envelope, but if you don't heat it then you don't have to comply with the energy code building envelope requirements. Can anyone point me to the code section that is related to this? I checked everywhere but can't find it. The closest thing I could find was that in COMcheck, there's no Utility classification when you try to choose the building type, but this doesn't confirm the statement that I was told. Thanks in advance!