I used to run the place as a B&B, so I had to go through the process and have a Commercial Kitchen.
I also have a bar from those times and the mechanics are similar, you need a certain amount of business and how I am currently operating the extra costs would not justify it.
Now I think my locale is relatively easy as far as this is concerned, well judging by a few comments made on here. But as always YMMV.
Interestingly I do very occasionaly get asked about Breakfast and I do leave a few things out, but not a proper breakfast, no cooking.
Looking at what local hotels do seems similar, there is one B&B who does the full thing.
I did have someone comment that the limited things I do is more that some do who offer Breakfast.
David