RicodJour wrote:

-snip-
If you have an opening from a garage to an occupied space (this
includes attics, basements and crawlspaces above and below), code
requires the opening to have a fire rated door, and it should be
weatherstripped. The idea is to prevent fire and fumes from entering
the occupied space and killing people. You don't have a door there
now, but that doesn't mean that you don't need one nor that it is
exempt from code requirements. It's not a big deal to make it
conform, and it'd be silly not to do so.

A crawlspace is an occupied space?

I agree with you if it is considered occupied-- but I thought that
'occupied' meant it would normally have people in it & didn't include
attics or unfinished basements.

[and I'm not having any luck finding a reference that describes it]

Jim