well lets see there is a steel door between the breezeway and the home, no combined attic space and no living space above the breezeway …so I guess that is a negative…
So, not sure what “building standard” you are all applying to this home…but I found this.
Separation from residence and attics
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Looks fine. I would recommend the installation of self closing hinges on the door between the garage and mud room as a fire safety enhancement.