Bedrooms require windows due to fire codes. There were a bunch of high profile cases of densely packed housing having fires, people being unable to escape, with resulting big death tolls. This generated a lot of outrage as you can imagine who was living in those sorts of conditions (poor families, lots of kids, etc.). A commercial building that people don’t sleep in has different fire codes because non sleeping people are more able to navigate to safety.
Bedrooms require windows due to fire codes. There were a bunch of high profile cases of densely packed housing having fires, people being unable to escape, with resulting big death tolls. This generated a lot of outrage as you can imagine who was living in those sorts of conditions (poor families, lots of kids, etc.). A commercial building that people don’t sleep in has different fire codes because non sleeping people are more able to navigate to safety.
There is no requirement that the windows serve this purpose. Mine don’t. I don’t find this to be a reasonable response.
Many buildings are grandfathered. Egress windows have been mandatory since the eighties afaik.