I'll take it a step further in challanging the original post: Kitchens are not *required* in residential occupancies.1. There are plenty of residential occupancies that do not have kitchens. A hotel is one example.
2. In order for a residential space to earn the definition "dwelling unit", it must have independent living facilities with "permanent provisions for living, sleeping, eating, cooking, and sanitation." Note that the code does not say that a "cooking provision" = kitchen, nor does it define the method of cooking. Could it be a microwave? A fireplace with a cast-iron hanging pot?
[by the way, what are the code-defined "provisions... for eating"? Do you need a dining table to get a C of O for your house?!]
I once had a project that had a fully-functioning home-style kitchen, but it was not a residence: it was a life-skills training classroom.